1961. During the process of cell division which of the following divides first?
✅ D. nucleus
Option A: cytodplasm Option B: vacuoles Option C: mitochondria Option D: nucleus Correct Answer : nucleus Read more
Author: Sheeraz Ahmed – Page 99
1962. Which of the following manufactures carbohydrates by the process of photosynthesis?
✅ A. chloroplast
Option A: chloroplast Option B: chromoplast Option C: leucoplast Option D: All of these Correct Answer : chloroplast Read more
1963. Diatoms stay afloat due to___________?
✅ B. Stored lpids
Option A: Flagella Option B: Stored lpids Option C: Pseudopodia Option D: All of these Correct Answer : Stored lpids Read more
1964. Diatomaceous earth is used for making __________?
✅ D. Fire proof bricks
Option A: Fertilizers Option B: Weedicides Option C: Insecticides Option D: Fire proof bricks Correct Answer : Fire proof bricks Read more
1965. Cell wall is richly impregnated with silica in__________?
✅ C. Baciliariophyta
Option A: Rhodophyta Option B: Phaeophyta Option C: Baciliariophyta Option D: Euglenophyta Correct Answer : Baciliariophyta Read more
1966. The cell wall is usually composed of two overlapping halves called epitheca and hypotheca in__________?
✅ A. Diatoms
Option A: Diatoms Option B: Desmids Option C: Pyrrophyta Option D: Chlorophyta Correct Answer : Diatoms Read more
1967. Unlike other algae, diatoms do not readily decay due to___________?
✅ B. Siliceous wall
Option A: Nonliving cells Option B: Siliceous wall Option C: Mucilaginous wall Option D: Water proof cell Correct Answer : Siliceous wall Read more
1968. Cell wall is extremely well preserved in fossil specimens in__________?
✅ A. Diatoms
Option A: Diatoms Option B: Dinoflagellates Option C: Slime moulds Option D: None of these Correct Answer : Diatoms Read more
1969. Empty diatom cells are called___________?
✅ C. Frustule
Option A: Raphe Option B: Valves Option C: Frustule Option D: Girdles Correct Answer : Frustule Read more
1970. Diatom frustule/ shell is made of_____________?
✅ A. Silica
Option A: Silica Option B: Calcium carbonate Option C: Manesium carbonate Option D: Both Correct Answer : Silica Read more