Biology Past Questions And Answers
One of the following statements is not true of viruses
- A) they are micro-organisms
- B) they are smaller than bacteria
- C) they can be seen with an ordinary light microscope
- D) they cause tobacco disease, polio and smallpox
The type of asexual reproduction that is common to both Paramecium and protists is
- A. budding
- B. sporulation
- C. fragmentation
- D. fission
The natural dwelling place of an organism is called its
- A. ecological niche
- B. habitat
- C. population
- D. environment
Which of these has the most complex level of organization?
- A. Euglena
- B. Hydra
- C. Heart
- D. Virus
Which of the following is NOT a part of the alimentary canal?
- A. Oesophagus
- B. Large intestine
- C. Liver
- D. Small intestine
The end product of glycolysis in plants and animals is
- A. pyruvic acid
- B. citric acid
- C. aspartic acid
- D. malic acid
Study the following list of deficiency symptoms in animals; use it to answer the questions below
I. Loss of appetite and weight;
II. Delayed healing of wounds;
III. Rickets;
IV Sterility in animals
V Failure of blood to clot;
VI. Night blindness
Which of the following deficiencies is caused by lack of vitamin A
- A. I
- B. III
- C. V
- D. VI
The rate of decomposition of dead organisms is faster in the tropical rainforest than in other biomes because
- A. of consistent cool temperature
- B. of availability of moisture
- C. of the relatively constant day light.
- D. there are more plants
The absence of special food and water-conducting systems restricts the body size in
- A. algae, liverworts and mosses
- B. liverworts, mosses and ferns
- C. the bryophytes and the pteridophytes
- D. the thallophytes and pteridophytes
When a Spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it?
- A. remains unchanged
- B. takes tip water and burst
- C. absorbs a little water
- D. loses water and shrivels