GATE Biotechnology / Life Science Mock Test - Botany

1. Which of the following is most abundant in the aleurone layer of wheat seeds?

Starch
Tannin
Lipid
Protein
2. Which of the following does not use xylem to transport water?
Marchantia
Selaginella
Magnolia
Miscanthus
3. Which of the following is the closet ancestor of all land plants?
Blue green algae
Red algae
Coleochaeteae
Chara
4. 4,6 diamino 2 phenylindole (DAPI) is a fluorescent dye used to stain the nucleus. Which of the following plant cells, when mature, cannot be stained by DAPI?
Tracheids
Trichomes
Mesophyll
Collenchyma
5. Which of the following is Not involved in plant response?
antimicrobial proteins
interlukins
pattern recognition receptors
Hypersensitive response
6. Which of the following is a neutral phenomenon?
Natural selection
sexual selection
Genetic drift
Population bottle neck
7. An organized and differentiated cell having cytoplasm but no nucleus is found in
Companion cell
Xylem parenchyma
Sieve tube element
Phloem Parenchyma
8. Which one of the following is NOT a cryoprotectant for plant tissue?
Dimethyl sulfoxide
Glycerol
Ethylene glycol
Liquid nitrogen
9. Double haploids in plants can be induced by
Mitomycin C
Colchicine
Mirin
5-Azacytidine
10. A tube like membrane structure that forms the connection between endoplasmic reiculum of neighbouring cells through plasmodesmata is
Desmotubule
Desmosome
Microtubule
Dictyosome
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