Science Quiz 1 may (Biology Basics)

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

Those organs which have same basic structure but different functions are called:

A. Analogous organs

B. Speciation

C. Fossils

D. Homologous organs

 What is ploughing and cultivating the land called?

A. Irrigation

B. Domestication

C. Tilling

D. Weeding

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

A group of glands which produce various hormones is called:

A. Respiratory system

B. Excretion

C. Endocrine system

D. Central nervous system

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

What are those animals called which eat both plants and animals?

A. Omnivores

B. Herbivores

C. Carnivores

D. Decomposers

 The complex feeding relationships within a community is called:

A. Food chain

B. Food web

C. Trophic level

D. All of the above

 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

What is the act of supplying water to a field through artificial means called?

A. Irrigation

B. Insecticide

C. Fungicide

D. Monoculture