Biology Past Questions And Answers
1451
The highest percentage of energy in an ecosystem occurs at the level of the
- A. secondary consumer
- B. decomposers
- C. producers
- D. primary consumers
1452
The use of predators or parasites to control pests in the farm is known as
- A. predator control
- B. chemical control
- C. biological control
- D. animal control
1453
In plants which of the following is required in minute quantities for growth?
- A. Copper
- B. Potassium
- C. Phosphorus
- D. Sodium
1454
Which of the following is an autotrophic mode of nutrition?
- A) Chemosynthesis
- B) Saprophytism
- C) Parasitism
- D) Symbiosis
1455
One of the differences between plant and animal cells is that in plants
- A. 'cells have less distinct outline, but animal cells have distinct outline
- B. ell wall is made of cellulose, but animal cell wall is made of chitin
- C. large vacuoles are absent, but present in animals
- D. carbohydrates are stored as starch, but as glycogen in animals.
1456
The joint between the femur and tibia is known as ________?
- A. hinge joint
- B. ball-and-socket joint
- C. pivot joint
- D. gliding joint
1457
One of the ecological conditions which favour the spread of malaria is
- A. improper disposal of decaying organic matter
- B. clearing bushes around dwelling houses
- C. presence of water weeds
- D. presence of stagnant water in ponds
1458
When the original king and queen of termites die, they are replaced by
- A. the king and queen of another colony
- B. some adult reproductives from the same colony
- C. some adult workers which are specially fed to breed
- D. developing nymphs nurtured as secondary reproductives
1459
Which of the following is NOT a function of the nucleus of a cell?
- A. it translates genetic information for the manufacture of proteins
- B. it stores and carries hereditary information
- C. it is reservoir of energy for the cell
- D. it controls the life processes of the cell
1460
Biosphere is best described as
- A. all parts of the earth where life exists
- B. the non-living parts of an ecosystem
- C. a components of an ecosystem
- D. all the members of a single species in a habitat