201.For heterotrophic organisms, competition is least caused by inadequacy of
- A. nutrients
- B. light
- C. space
- D. mates
202.The most important adaptation of xerophytes is the ability of the protoplasm to
- A. absorb water and swell
- B. resist being damaged by loss by loss of water
- C. shrink from the cell wall
- D. store sugar and minerals in the vacuoles.
203.The stem of a typical aquatic plant usually has many
- A. water cavities
- B. water conducting cells
- C. air cavities
- D. intercellular spaces.
204.A green snake in green grass is able to escape notice from predators because of its
- A. warning colouration
- B. disruptive colouration
- C. cryptic colouration
- D. counter shading.