Biology - Questions and Answers, General Study (GK)

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261.

Which gas is essential for photosynthesis?

(a)O₂

(b)CO₂

(c)N₂

(d)CO

Comment

Answer is: BNA

262.

An element present in chlorophyll

(a)Ca

(b)Fe

(c)Mg

(d)S

Comment

Answer is: CNA

263.

Process by which plant prepare their food is

(a)Carbohydrolysis

(b)Metabolic synthesis

(c)Photosynthesis

(d)Photorespiration

Comment

Answer is: CNA

264.

First step of photosynthesis is

(a)Activation of chlorophyll by sunlight

(b)Oxygen comes out from water

(c)Formation of carbohydrate

(d)Fixation of carbon dioxide

Comment

Answer is: ANA

265.

Which of the following organelles of a cell is /are involved in photosynthesis?

(a)Chloroplast

(b)Mitochondrion

(c)Endoplasmic reticulum

(d)Golgi bodies

Comment

Answer is: ANA

266.

Osmosis is defined as

(a)Flow of solute from a semipermeable membrane

(b)Diffusion of solvent (water) through a semipermeable membrane from less concentrated solution to more concentrated solution

(c)Flow of water without a membrane

(d)Diffusion of suspended particle from higher to lower concentration

Comment

Answer is: BNA

267.

The ultimate cause of water movement in a plant stem against gravity is

(a)Osmosis

(b)Photosynthesis

(c)Transpiration

(d)Diffusion

Comment

Answer is: CNA

268.

Which of the following contain enzymes for cellular respiration?

(a)Dictyosomes

(b)Endoplasmic reticulum

(c)Lysosomes

(d)Mitochondria

Comment

Answer is: DNA

269.

Which one of the following cell organelles is responsible for cellular respiration?

(a)Mitochondrion

(b)Endoplasmic reticulum

(c)Golgi body

(d)Lysosome

Comment

Answer is: ANA

270.

Which one of the following types of plants produces spores and embryo, but without seeds and vascular tissues?

(a)Gymnosperms

(b)Pteridophytes

(c)Bryophytes

(d)Angiosperms

Comment

Answer is: CNA

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Biology - Questions and AnswersPage 27

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