0

Botany

Description: Get Notes and Online Tests for Biochemistry, Biology, Biology Notes, Biology Test, Biology Test Papers, class XII biology questions,Medical Entrance,Medical biology,AIIMS, CBSE biology,medical entrance biology
Number of Questions: 30
Created by:
Tags: Biochemistry Biology Biology Notes Biology Test Biology Test Papers class XII biology questions Medical Entrance Medical biology AIIMS CBSE biology medical entrance biology Polysaccharides Carbohydrates Enzymes Anaerobic Respiration Anaerobic Respiration in Plants Biotechnology and its Application Biotechnology and Its Applications Cellular Organelles Cell: Structure and Function
Attempted 0/30 Correct 0 Score 0

PME is a/an _________.

  1. pesticide

  2. enzyme

  3. insecticide

  4. plant growth regulator


Correct Option: B

Which of the following enzymes converts glucose into ethyl alcohol?

  1. Zymase

  2. Invertase

  3. Maltase

  4. Diastase


Correct Option: A

Ribosome is made up of ______.

  1. RNA and protein

  2. protein only

  3. RNA only

  4. DNA only


Correct Option: A

Polymerase chain reaction (PCR) based markers were developed to ______.

  1. differentiate between different biotypes of gall midge

  2. manufacture antibiotics

  3. create termination codon

  4. obtain soil micro-organisms with the help of reductase enzyme


Correct Option: A

Which of the following is/are homopolysaccharide(s)?

  1. Dextran

  2. Glycogen

  3. Both 1 and 2

  4. Hyaluronic acid


Correct Option: C

Dacrydium laxifolium is ________.

  1. a mushroom of great economic value

  2. an isolated bacterium from rotten apple

  3. the smallest conifer

  4. an iodine containing marine alga


Correct Option: C

Which of the following fruits is/are found in family Ranunculaceae?

  1. Achenes

  2. Capsule

  3. Berry

  4. All of the above


Correct Option: D

The radicle is found at the lower end of the hypocotyl and the embryonic shoot is found above the insertion of the ______.

  1. leaf

  2. cotyledons

  3. stem

  4. root


Correct Option: B

Which of the following are known as phanerogams without ovary?

  1. Thallophytes

  2. Pteridophytes

  3. Bryophytes

  4. Gymnosperms


Correct Option: D

The minimum number of transferred RNA molecules for each of the twenty amino acids that are found in proteins is _____.

  1. 20

  2. 40

  3. 1

  4. 2


Correct Option: C

How many turns of Calvin cycle yield one molecule of glucose?

  1. Three

  2. Four

  3. Five

  4. Six


Correct Option: D

Which of the following nomenclatures is/are correct as per Whittaker's five kingdom classification?

  1. Monera, Protista, Cytobiota, Fungi and Animalia

  2. Monera, Protista, Plantae, Fungi and Animalia

  3. Metaphyta, Plantae, Protista, Fungi and Animalia

  4. Plantae, Protobiota, Fungi, Cytobiota and Animalia


Correct Option: B

Which of the following anatomical features of leaf does/do not reduce the rate of transpiration?

  1. Compact mesophyll cells in the leaf

  2. Increase in the number of stomata

  3. Thick cuticle surrounding the outermost parts of the plant

  4. All of the above


Correct Option: B

All the reactions from the reduction of carbon dioxide to the formation of sugar are included in the ______.

  1. dark reaction

  2. light reaction

  3. EMP-pathway

  4. All of the above


Correct Option: A

'Downy mildew of grape' is caused by ______.

  1. echinocola colona

  2. malva crispa

  3. peronospora pisi

  4. None of the above


Correct Option: D

Lichens bear a composite structure consisting of two dissimilar organisms, which are _____.

  1. a fungus and an alga

  2. a fungus and a bacterium

  3. a virus and a bacterium

  4. a higher plant's root and a fungus


Correct Option: A

The appearance of a thin-thread like condensing chromosome marks the first phase of mitosis called ________.

  1. metaphase

  2. prophase

  3. interphase

  4. None of the above


Correct Option: B

Which of the following enzymes recognize/s particularly common DNA lesions?

  1. RNA polymerase

  2. DNA polymerase

  3. DNA glycolysase

  4. All of the above


Correct Option: C

A technique used for studying the effect of deficiency or toxicity of mineral nutrients on plant growth and metabolism is called ______.

  1. hydroculture

  2. hydroponics

  3. solution culture

  4. None of these


Correct Option: C

Nostoc, a blue-green alga, occurs as an endophyte in ____.

  1. gunnena

  2. anthoceros

  3. cycas

  4. All of the above


Correct Option: D

Inflorescence in coconut is ______.

  1. compound spadix

  2. hypanthodium

  3. cyathium

  4. strobile


Correct Option: A

The efficient oil eating 'super bug' developed through genetic engineering, used in the cleaning of oil spills polluted sites is a species of _____.

  1. citrobacter

  2. pseudomonas

  3. arthrobacter

  4. thiobacillus


Correct Option: B

The process in which the amount of DNA, RNA and protein can be known at a time is called ______.

  1. autoradiography

  2. cellular fractioning

  3. phase-contrast microscopy

  4. None of these


Correct Option: B

The diploid number of chromosomes in rice is ______.

  1. 12

  2. 24

  3. 36

  4. 48


Correct Option: B

Which of the following antibiotics blocks the synthesis of bacterial cell wall?

  1. Streptomycin

  2. Tetracycline

  3. Penicillin

  4. Erythromycin


Correct Option: C

Energy and nutrients are trapped in a community by

  1. scavengers

  2. detrivores

  3. consumers

  4. producers


Correct Option: D

Restorer gene for fertility is present in the ______.

  1. ribosome

  2. nucleus

  3. endoplasmic reticulum

  4. polyribosome


Correct Option: B

The point at which crossing over occurs between homologous chromosomes is called ______.

  1. chromonemata

  2. chromomere

  3. chiasmata

  4. None of these


Correct Option: C

In the nucleoplasm, there occurs a conspicuous body of spherical shape attached to a particular chromosome on a definite position. This is called _____.

  1. plasmid

  2. nucleolus

  3. centromere

  4. karyolymph


Correct Option: B

Which of the following algae is/are known as 'Mermaid's Wine Glass'?

  1. Acetabularia

  2. Ulothrix

  3. Nostoc

  4. All of the above


Correct Option: A
- Hide questions