6.

Movement of cell against concentration gradient is called
A. osmosis B. active transport
C. diffusion D. passive transport
Answer and Explanation
Answer:B
Explanation: Active transport, this is the only transport method that can move species against their concentration gradient (from low to high concentration). Facilitated diffusion only moves species down their concentration gradient from high to low concentration.
7.

Photosynthesis generally takes place in which parts of the plant?
A. Leaf and other chloroplast bearing parts B. stem and leaf
C. Roots and chloroplast bearing parts D. Bark and leaf
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
8.

Most fish do not sink in water because of the presence of swim bladder I.air bladder II.air sacs III.air in spongy bones
A. I and II are correct B. II and III are correct
C. III and IV are correct D. I, II, III and IV are correct
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
9.

Plants synthesis protein from
A. starch B. sugar
C. amino acids D. fatty acids
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.
10.

Plants absorb dissolved nitrates from soil and convert them into
A. free nitrogen B. urea
C. ammonia D. proteins
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.