Which of the following is associated with the description of life-forms in plant communities?

Shotgun technique is employed in

Which of the following statements is/are correct?

(1) Plants developed through suspension cultures generally exhibit genetic variations. (2) Plants regenerated via organogenesis from callus cultures generally do not exhibit genetic variations.

Consider the following statements:

Segmental allopolyploids are the polyploids in which

1. the chromosomes are derived from different genomes
2. the chromosomes form multivaluents during meiosis
3. the genomes involved are not quite different from one another

Which of the statements given above are correct?

Consider the following statements:

1. Bamboos produce new plants vegetatively through their rhizomes.

2. Strawberries can reproduce asexually by runners.

Which of the statements given above is/are correct?

Which of the following pairs is not correctly matched?

Consider the following substances:

1. Cellulose
2. Glucan
3. Lignin Which of the above substances is/are found as component/components of fungal cell wall?

What are phragmoplasts?

During zygotene stage of meiosis in a spore mother cell, a proteinaceous structure which appears between homologous chromosomes is known as

Which part of the plant is involved in the vegetative propagation of Dalbergia sissoo?

Consider the following statements:

1. Beta-oxidation takes place only in glyoxysomes and not in cytosol.
2. When fatty acids undergo beta oxidation to form Acetyl CoA, only NADH is produced and not FADH2. Which of the statements given above is/are correct?

To impart viral resistance, plants can be genetically modified with which one of the following genes?

Consider the following:

1. Insulin
2. Human Growth hormone
3. Interferons
4. Hepatitis - B surface antigen Which of the above is/are generated from genetically engineered microbes?

Consider the following statements: Biosensors are used in

1. In vitro diagnostics.
2. Detection of microbial contaminants in food.
3. Monitoring pollutants in the abiotic component of environment. Which of the statements given above is/are correct?

Which of the following is the method of gene transfer based on the use of short electrical impulses of high field strength?

Consider the following statements:

1. Initiator tRNA binds to the ribosome small subunit even though no mRNA is present.
2. During elongation of protein chain, the bond between methionine and its tRNA in the P channel is broken by the enzymes located in the small subunit of ribosome. Which of the statements given above is/are correct?

Which one of the following is also known as southern hybridization ?

The plasmid derived from E.coli plasmid Col E1 is

Which among the following substances has carbon skeletons made up of isoprene units?

Peptide bond is formed between

When genotype of haploid pollen and diploid pistil determine incompatibility, it is known as

With reference to the designing of vectors based on Ti and Ri plasmids, consider the following statements:

1. They are disarmed by removing the genes causing the disease.

2. They carry sites for insertion of gene of interest.

3. They carry selectable markers.

Which of the statements given above are correct?

Which of the following factors are involved in the formation of new species?

Hybrid vigour in artificial tobacco hybrids was first reported by

With reference to sex determination in Melandrium album, consider the following statement:

1. The Y chromosome is longer than the X chromosome.

2. The Y chromosome and X chromosome form a heteromorphic bivalent at meiosis.

3. It is the presence of a single Y chromosome rather than any number of X chromosomes or autosomes that give a male individual.

Which of the statements given above are correct?

Who discovered that the infective part of virus is nucleic acid?

Double trisomes have a genomic constitution of

The coupling and repulsion hypothesis was put forth by

Which one of the following is the carrier of cytoplasmic male sterility factors in crop plants?

Which one of the following is the main cause of the lower yield of F2 generation than the F1 generation following hybridization between two inbred lines of maize?

Most reaction of fatty acid synthesis occur in

Assertion (A) : Citric acid has less 'Respiratory Quotient' in comparison to lipids. Reason (R) : Citric acid has relatively more oxygen in comparison to lipids

The plastid only

Assertion (A) : Segmental allopolyploids where all the chromosomes are homologous.

Reason (R) : Segmental allopolyploids can be identified by their meiotic behaviour.

Assertion (A) : The expression of each gene is independent of the other genes.

Reason (R) : Genes follow the law of independent assortment as per Mendel's studies.

Who of the following is associated with the discovery of 'Restriction endonuclease'?

Which one of the following is the purpose of adding agar in the medium for tissue culture ?

Which one of the following statements is correct?

A concentric vascular bundle that has the phloem surrounding the xylem is called

Which one of the following types of inflorescence is found in carrot?

Callus is defined as

Match List I (Phenotypic segregation ratio) with List II (Type of gene action) and select the correct answer using the codes given below the lists ||| |---|---| | List I | List II | | A. 9 : 6 : 1 | 1. Duplicate gene action | | B. 12 : 3 : 1 | 2. Supplementary gene action | | C. 9 : 3 : 4 | 3. Inhibitory gene action | | D. 13 : 3 | 4. Masking gene action | | | 5. Polymeric gene action |

Consider the following statements:

(1) Stomata are completely absent in hydrophytes. (2) In hydrophytes, vascular bundles always have bundle sheaths.

Which of the statements given above is/are correct ?

Consider the following plants:

1. Darlingtonia
2. Dinoaea
3. Sarracenia Which of the above plants is/are carnivorous?

Which of the following is a non-succulent peremnial xerophyte?

The bulbosum technique used for the production of haploid barley was first given by

Consider the following statements:

1. In Eichhornia, petioles become spongy and swollen.
2. Ramunculus shows heterophylly.
3. Roots are entirely absent in Salvinia.

Which of the statements given above is/are correct?

Consider the following statements:

(1) All ferns are perennial and herbaceous. (2) Most ferns are homosporous, but Marsileales and Salvineales are heterosporous.

Which of the statements given above is/are correct?

Which of the following statements is not correct?

Match the following:

Which of the following families has syngenesious anthers and inferior ovary?

Consider the following statements:

(1) In insectivorous plants, trichomes secrete digestive enzymes onto the trapped insects. (2) Suberin gives strength and water-proofing properties to sclerenchyma. (3) Roots do not form a bark.

Which of the statements given above is/are correct?

By the presence of which of the following can the family Brassicaceae be immediately identified?

The family Ephedraceae, having ephedrine producing plants, belongs to

The family Onagraceae is marked out by which type of embryo sac?

Ginkgo resembles ferns having

Match List I (Scientists) with List II (Concept/Law/Principle) and select the correct answer using the codes given below the lists ||| |---|---| | List I | List II | | A. Hardin | 1. Competitive exclusion principle | | B. Liebig | 2. Law of tolerance | | C. Shelford | 3. Law of minimum | | D. Whittaker | 4. Concept of vegetational |

Consider the following statements :

1. Cucurbits are monoecious plants.
2. In mango, neuter, male and female flowers occur together . which of the statements given above is/are correct ?

What is the function of villi?

Consider the following plants:

1. Bruguiera
2. Eugenia
3. Kandelia
4. Schima Which of the above are mangrove trees ?

Which one of the following activates cambium and elicites differentiation of xylem ?

Consider the following statements :

1. In climacteric fruits, ethylene stimulates its own production.
2. Gibberellin present in a healthy stem cuases some of the new cells to differentiate as phloem.
3. Loss of turgor in leaves stimulates the productions of abscisic acid Which of the statements given above are correct ?

Red drop and Emerson effect have proved the existence of

Consider the following statements :

1. In the roots with endomycorrhizal association, the fungal hyphae pentrate the root cortex and pass through the casparian strip to enter vascular tissue.
2. The globin part of leghemoglobin in nitrogen-fixing root nodules is encoded by the bacterium whereas heme group is synthesized by the host plant. Which of the statements given above is/are correct ?

Match the following ||| |---|---| | List I | List II | | A. Cardamom | 1. Iridaceae | | B. Fenugreek | 2. Labiatae | | C. Peppermint | 3. Papilionaceae | | D. Saffron | 4. Zingiberaceae |

Which of the following statements is not correct?

With reference to photosynthesis, what is the CFO - CF1 complex?

With reference to photosynthesis, in chloroplasts, consider the following statements:

1. The reactions that break down water and produce oxygen are located on the lumen side of the thylakoid membrane, in granum areas.
2. The molecules of ferredoxin-NADP reductase that generate NADPH are located on the side of the membrane facing stroma. Which of the statements given above is/are correct ?

Consider the following statements :

1. The Penthose Phosphate Pathway supplies Erythrose-4-Phosphate which is the starting material in the synthesis of lignin.
2. The Pentose Phosphate Pathway also occurs in plastids.
3. NADPH is generated by the Pentose Phosphate Pathway. Which of the statements given above are correct?

Geiger-Muller Counter is used for

Which one of the following statements is not correct ?

Which one of the following is the correct sequence of the appearance of intermediate compounds in the pathway of photorespiration ?

Assertion (A) : Ferredoxin carries two electrons at a time. Reason (R) : The active site of ferredoxin consists of two iron atoms bound to two sulfur atoms

Which one of the following diseases is caused by fluoride in drinking water ?

Which one of the following is a disease caused by zinc deficiency ?

Banana propagates vegetatively through

The pollination between two flowers on different plants is known as

Assertion (A) : If the oat seedling are exposed to unilateral illumination, the stem bends towards the light. Reason (R) : An auxin gradient is established in the coleoptile by the destruction of auxin in the lighted side and extra synthesis of auxin in the darker side.

Which of the following is a characteristic of sorosis?

In oak, pollination is facilitated mainly by

The intine of pollen is made up of

Which one of the following is not a common feature of gametophytic selfincompatibility systems?

Nucellus in fertilized ovule is known as

Consider the following statements:

1. The seeds of shorea robusta remain viable only for a week or so.

2. The seeds of Lens esculenta can remain viable for several years.

Which of the statements given above is/are correct?

Which one of the following pairs is not correctly matched?

Which one of the following statements is not correct?

With reference to the pollination stage in angiosperms, consider the following statements:

1. Pollen grains get dehydrated.

2. Antipodals degenerate.

Which of the statements given above is/are correct?

Assertion (A) : Rice seeds germinate and begin to grow under flooded conditions.

Reason (R) : Embryos of rice seeds carry out facultative anaerobic respiration.

Which one of the following algae is an important source of mannitol?

Assertion (A) : In pear fruit, the inner tissue is the true fruit and the outer tissue is the accessory fruit.

Reason (R) : In pear, the fruit develops from inferior ovary.

Consider the following diseases of plants:

1. Root knot of sugar-cane.
2. Root rot of wheat.
3. Wilt of cotton.
4. Angular leaf spot of cotton. Which of these diseases is/are caused by fungi?

Which of the following chemicals is/are used in seed viability testing?

Which one of the following pairs is not correctly matched?

Which one of the following dyes is used in testing the viability of protoplasts?

Which one of the following hydrophytes has its roots fixed in mud and leaves floating on water ?

As per the International Society of Soil Science, what is the size of the particles of 'Fine Sand' in the soil?

Match list I (Region) with list II (Contribution to) and select the correct answer using the codes given below the lists:

Which one of the following is a copper fungicide?

Which one of the following plants gives palmarosa oil?

Consider the following statements:

1. Polyhydroxybutyrates are produced by bacterial fermentation.

2. Polyhydroxybutyrates can be used as biodegradable plastics.

3. Transgenic trees are used in producing polyhydroxybutyrates.

Which of the statements given above is/are correct?

With reference to the introduction of plant diseases into India from other countries, consider the following pairs ||| |---|---| | 1. Bunchy top of banana | Ceylon (Sri Lanka) | | 2. Potato tuber moth | Italy | | 3. Flag smut of wheat | Fiji |

Which of the above pairs is/are correctly matched?

Which one of the following pairs is not correctly matched?

Biological control through antagonism involves

1. amensalism
2. competition
3. parasitism
4. predation

Cell cultures of lithospermum eryghrohizon are being used commercially for preparing

Consider the following statements:

In vitro micropropagation has the advantages of

1. range of variability.

2. year round availability.

3. small size of explant.

4. production of disease free propagules.

Which of the statements given above are correct?

Ipomea batatas is propagated vegetatively by using

Which one of the following plants is considered as a potential petro-corp ?

Match list I (Wildlife sanctuary) with list II (State) and select the correct answer using the codes given below the lists:

Which one of the following was not present in earth's atmosphere before the origin of life?

With which of the following is the name of Louis Pasteur associated?

Match list I (Forest type) with list II (Plant association) and select the correct answer using the codes given below the lists:

Match list I (Parasites) with list II (Type) and select the correct answer using the codes given below the lists:

Match list I (Organisms) with list II (Stage of succession) and select the correct answer using the codes given below the lists:

Dense clumping of chromosomes on one side with no chromatin material being seen in the rest of the nucleus is termed as

With which of the following is Richmond Lang effect associated?

Assertion (A) : Orchid seeds lack endosperm.

Reason (R) : Double fertilization is absent in orchids.

Which one of the following enzymes is added in many detergents that helps to remove proteinaceous stains from clothes?

Assertion (A) : The rate of DNA replication is much faster in E. coli than in eukaryotes.

Reason (R) : The length of Okazaki fragments that result from DNA Polymerase I activity are much shorter in prokaryotes than in eukaryotes.

Which of the following pairs is not correctly matched?

Match List I (Transegenic variety of crops) with List II (Trait for which gene has been incorporated) and select the correct answer using the codes given below.