GCET Mock - 5 (Bio)
Description: GCET Mock - 3 (Bio) | |
Number of Questions: 75 | |
Created by: Girish Goud | |
Tags: GCET Mock - 3 (Bio) Biotechnology and its Application Biotechnology and Its Applications Large Scale Processing of Desired DNA DNA and Its Structure Biology and Human Welfare Evolution Reproduction in Animals Reproduction |
Which of the following statements is true about complementary DNA (cDNA)?
Which of the following is an example of Monoecious plant?
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.
Chemically the female sex hormones estradiol and progesterone are ____________.
Before ejaculation in mammals, the spermatozoa are stored in which of the following?
Which of the following is not a whorl of flower?
Which of the following structures is not present in Androecium?
Match the following items given
Column-I | Column-II |
1. Parasitism | A. Advantageous for both A and B |
2. Commensalism | B. Harmful for both A and B |
3. Predation | C. Advantageous for A but harmful for B |
4. Mutualism | D. Advantageous for A but inhibitory for B |
5. Competition | E. Advantageous for A and has no effects on B |
Which of the following statements is/are correct?
- Green plants or primary consumers make up the first trophic level of the food chain.
- At the fourth level of the food chain are the decomposers, that is the organisms that break down dead or dying matter into nutrients.
Which of the following vegetative propagules in angiosperms is incorrectly matched?
Genes for antibiotic resistance are located in the
The vector for transfer of DNA to plants is
With which of the following did the linking of antibiotic resistance gene with the plasmid vector became possible?
The enzyme which is highly useful in polymerase chain reaction (PCR) is
Main objective of production/use of herbicide resistant GM crops is to
Golden rice is rich in
Amino acid sequence in protein synthesis is decided by the sequence of
What is antisense technology?
An active immune system recruits many cells to the affected tissue to kill off the disease-causing microbes. What is this recruitment process known as?
Linkage between a pair of genes is indicated when their recombination frequency is
What is Darwin's explanation of the way in which evolution occurs?
Which of the following are the examples of analogous organs?
HIV that causes AIDS, first starts destroying which of the following?
All of the following are disease-causing pathogens in plants, except
Cross breeding is the crossing of two different pure breeds or populations, as a result of mixing the genetic contributions of its parents the offspring exhibit the characters of both the parents. What is this condition referred to as?
Cells of which of the following tissues possess totipotency?
Which two plants reproduce by the means of spore?
Which of the following statements is/are correct?
A. It is advantageous to use microbial enzymes in organic synthesis than mammalian enzymes. R. Microorganisms can be made available, if needed, in much higher amounts than the animals.
Which of the following combinations are incorrect? I. Asthma - Lung II. Influenza - Respiratory tract III. Rickets - Pancreas IV. Malaria - Brain
Endosymbiosis is useful for
Which fuel does not cause pollution on burning?
In maize, hybrid vigour is exploited by
High growth at the time of exponential phase of human population growth curve is due to
Which of the following statements is/are true regarding the food chain given below? Grass → rabbits → snakes → hawks
Which of the following is an in situ method for biodiversity conservation?
Keystone species deserve protection because these
Among the following environmental pollutants, which one leads to the occurrence of acid rain?
What is the name given to the global ecosystem?
Withdrawal of which of the following hormones is the immediate cause of menstruation?
The reproduction in phanerogams occurs by
Match the following:
I | II |
A. Biosphere Reserve | 1. Areas reserved for wildlife where it can freely use habitats and natural resources |
B. Wildlife Sanctuary | 2. Large areas of protected land for conservation of wildlife, plant and animal resources and traditional life of tribals living in the area |
C. National Park | 3. An establishment that maintains wild animals in a park to study, conserve and display |
4. Areas where animals are protected from any disturbance to them and their habitat |
Which of the following statements are correct?
I. Greenhouse gases are responsible for global warming. They should be eliminated to save the planet. II CO2 is the most dangerous of the greenhouse gases. Reduction in the release of CO2 would surely bring down the temperature. III The greenhouse effect could be traced back to the industrial revolution. But the current development and the patterns of life have enhanced their emissions. IV. Deforestation has been one of the biggest factors contributing to the emission of greenhouse gases.
J-shaped chromosomes are called
How many polar bodies are formed at the end of 1 cycle of oogenesis?
Which phase of menstrual cycle is the longest phase?
In angiosperms, there is double fertilization, which means fusion of _____.
Placenta in mammalian embryo is formed by
Which of the following is an example of hypoploidy?
Match the following. ||| |---|---| | List I| List II| | (a) Vulnerable species | (i) Nicobar pigeon | | (b) Rare species | (ii) Pink head duck | | (c) Endemic species | (iii) Indian wild ass | | (d) Extinct species | (iv) Blue sheep | | (e) Endangered species | (v) Horn bill |
In angiosperms, embryosac is developed from
Consider the following statements: (a) Endometrium is the innermost layer of uterus which is highly vascularized and rich in glands. (b) Gametogenesis is the process of formation of gametes in sexual reproduction. (c) Golgi provide energy for the movement of sperm. Which of the above statements are correct?
How many parent cell divisions are necessary to produce two hundred pollen grains?
In which of the following techniques do eggs and sperm are collected and injected directly into the upper regions of the oviducts, where fertilization normally takes place?
Which of the following hormones is secreted by sertoli cells which exerts negative feedback on the production of FSH by cells in the anterior pituitary?
In Mirabilis jalapa, red flowering plant is crossed with white flowering plant. What will be the F2 phenotypic ratio?
Syphilis can spread through
How many gametes will be produced by a plant which is heterozygous for 3 traits assorting independently?
What is the amount of DNA of the parent cell as compared to daughter cells formed after cell division?
Which of the following shows codominance pattern of inheritance?
A fruit fly heterozygous for sex linked genes is mated with a normal female fruit fly. The male specified chromosome is likely to enter egg cells in the proportion of
Semi-conservative model of DNA replication was experimentally proved by
Consider the following statements:
(1) A river with high BOD (Biological Oxygen Demand) is comparatively less polluted. (2) Eutrophication leads to the decrease in concentration of CO2 in water bodies.
Which of the given statements is/are correct?
RNA retroviruses have special enzyme that
The enzyme which helps to remove nucleotide from the end of DNA is
Which type of covalent bonds link the amino acids in a protein?
During protein synthesis in prokaryotes, the initiation of polypeptide chain is induced by
What is the mode of gene regulation in lac-operon?
One turn of the helix in a B-form DNA is approximately
Chromosomal theory of inheritance was based on
If the gene encoding the trp repressor is mutated, such that it can no longer bind tryptophan, then will the transcription of the trp operon occur?
Which one of the following pairs is correctly matched?
Mongolism is also known as
Which of the following cells are associated with immune system of human body?
Identify the type of sex determination seen in humans and drosophilas.
Match List I and List II and identify the correct answer.
List – I | List – II |
(A) Hybrid DNA | (a) Vector |
(B) Molecular cloning | (b) Tissue culture |
(C) Replicon | (c) r–DNA |
(D) Totipotency | (d) Gene cloning |