1. Those organs which have same basic structure but different functions are called:
A. Analogous organs
B. Speciation
C. Fossils
D. Homologous organs
Ans. C
2. Those organs which have different basic structure but have similar appearance and perform similar functions are called:
A. Fossils
B. Analogous organs
C. Homologous organs
D. Speciation
Ans. B
3. What are those animals called which eat both plants and animals?
A. Omnivores
B. Herbivores
C. Carnivores
D. Decomposers
Ans. A
4. What is the shedding of flowers, leaves and fruits followed by formation of scar tissue in a plant called?
A. Abscission
B. Abscisic acid
C. Deciduous
D. Mitosis
Ans. A
5. A group of glands which produce various hormones is called:
A. Respiratory system
B. Excretion
C. Endocrine system
D. Central nervous system
Ans. C
6. Organic constituents of soil formed by complete or partial decomposition of plant and animal material is called:
A. Fauna
B. Humus
C. Fossil
D. Compost
Ans. B
7. The complex feeding relationships within a community is called:
A. Food chain
B. Food web
C. Trophic level
D. All of the above
Ans. B
8. What are heterotrophs, mostly bacteria and fungi, when obtain food by breaking down substances in dead protoplasm are called:
A. Omnivores
B. Herbivores
C. Decomposers
D. Carnivores
Ans. C
9. What is the act of supplying water to a field through artificial means called?
A. Irrigation
B. Insecticide
C. Fungicide
D. Monoculture
Ans. A
10. What is ploughing and cultivating the land called?
A. Irrigation
B. Domestication
C. Tilling
D. Weeding
Ans. C