Biology Past Questions And Answers
Maize grains are best stored against insect attacks by__________________
- A. keeping in a silo
- B. storing in the room
- C. leaving them on their cobs
- D. covering with leaves
Which of the following organisms is an endoparasite?
- A. Mice
- B. Mosquito
- C. Ascaris
- D. Dodder
Which of the following is not an aquatic habitat?
- A. Estuaries
- B. Ponds
- C. Rainforest
- D. Swamp
A new volcanic island forms in the Pacific Ocean. Over time, soil forms on the island, grasses grow, shrubs appear, birds nest on the island, and the island is no longer a barren rock. This is an example of which of the following?
- A. Evolution because the species on the island changed over time.
- B. A population bottleneck because the population on the island has to be very limited due to the nature of islands.
- C. A climax community because the community changed and grew more complex.
- D. Ecological succession because the structure and composition of the community has changed over time.
The increasing order of the particle size in following soil type is
- A. clay → sand → silt →gravel
- B. silt → sand → clay → gravel
- C. clay → silt → sand → gravel
- D. silt → clay → sand → gravel
The living part of phloem tissue is
- A) sieve plate
- B) companion cell
- C) sieve element
- D) cytoplasm
The transfer of ripe pollen grains from the anther to the stigma of the same flower is termed
- A. fertilization
- B. self-pollination
- C. reproduction
- D. conjugation
The fine adjustment of the light microscope is used to
- A. admit more light into the microscope
- B. focus the object under low power
- C. focus the object under high power
- D. raise the stage upwards
Which of the following traits is not a morphological variation in humans?
- A. Ability to taste PTC
- B. Colour
- C. Fingerprints
- D. Size
________ is a form of sexual reproduction
- A) Grafting
- B) Budding
- C) Fission
- D) Conjugation