- The hormone which regulates the amount of glucose in the blood is called?
- A. Adrenalin
- B. Auxin
- C. Insulin
- D. Thyroxine
Correct Option: Answer is C
Insulin is a peptide hormone produced by beta cells of the pancreatic islets; it is considered to be the main anabolic hormone of the body. It regulates the metabolism of carbohydrates, fats and protein by promoting the absorption of glucose from the blood into liver, fat and skeletal muscle cells
2. Deamination occurs in the?
- A. Kidney
- B. Pancreas
- C. Spleen
- D. Liver
Correct Option: Answer is D
Deamination is used to break down amino acids for energy, and occurs primarily in the liver.
3. In an agricultural ecosystem, the biotic component consist of
- A. crops, pests and beneficial insects
- B. crops, temperature and humidity
- C. pests, beneficial insects and water
- D. crops, water and soil
Correct Option: Answer is A
4. Epiphytes growing on the branches of trees provide an example of the relationship known as?
- A. parasitism
- B. commensalism
- C. saprophytism
- D. holophytism
Correct Option: Answer is B
- Commensalism is a long-term biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed
5. The hypha of rhizopus is said to be non-septate because it
- A. does not contain chloropyll
- B. has no cross wall
- C. is vacuoled
- D. stores oil globus
Correct Option: Answer is B
6. The function of ribosome in cells is
- A. protein synthesis
- B. starch synthesis
- C. transport of material
- D. lipid storage
Correct Option: Answer is A
A ribosome is a cell organelle. It functions as a micro-machine for making proteins.
7. In which of the following does external fertilization take place?
- A. toad
- B. lizard
- C. bird
- D. cockroach
Correct Option: Answer is A
External fertilization is a mode of reproduction in which a male organism’s sperm fertilizes a female organism’s egg outside of the female’s body
8. The villus in the small intestine is significant because
- A. Increases the surface area for absorption
- B. increases the surface area for digestion
- C. assists in mixing digested food
- D. assists in filtering undigested food
Correct Option: Answer is A
Villis (plural)are specialized for absorption in the small intestine as they have a thin wall, one cell thick, which enables a shorter diffusion path
9. The butterfly is of great economic importance because
- A. of it’s use in scientific studies
- B. it sucks nectar from flowers
- C. it adds to the beauty of the environment
- D. it pollinates flowers of crops and other plants
Correct Option: Answer is D
10. The bright colours of the comb and feathers in the peacock are for?
- A. sex differentiation
- B. beauty
- C. courtship
- D. defence
Correct Option: Answer is C
11. What is the term used to describe biotic and abiotic factors in the environment of the organism?
- A. habitat
- B. biome
- C. ecosystem
- D. ecological niche
Correct Option: Answer is C
An ecosystem consists of all the biotic and abiotic factors that influence that community.
12. Which of the following instruments is NOT used in measuring abiotic factors in any habitat?
- A. microscope
- B. thermometer
- C. hygrometer
- D. windvane
Correct Option: Answer is A
13. The smallest living organism which share the characteristics of both living and non-living matter are
- A. bacteria
- B. fungi
- C. viruses
- D. protozoa
Correct Option: Answer is C
14. The process by which a red blood cell placed in distilled water absorbs water until it burst and release it’s content into the surrounding is known as
- A. osmosis
- B. plasmolysis
- C. turgidity
- D. hemolysis
Correct Option: Answer is D
Hemolysis: The destruction of red blood cells which leads to the release of hemoglobin from within the red blood cells into the blood plasma. Etymology: The word “hemolysis” is made up of “hemo-“, blood + “lysis”, the disintegration of cells
15. Which of the following waste products in plants is excreted through the stomata and lenticles?
- A. carbon dioxide
- B. alkaloids
- C. tannins
- D. anthocyanins
Correct Option: Answer is A
The waste products of a plant are carbon dioxide, water vapour and oxygen.