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 Biology Questions

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Q:

The body of all complex animals consist of only _______ basic types of tissue(s).

A) 4000 B) 400
C) 40 D) 4
 
Answer & Explanation Answer: D) 4

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Q:

Algae belongs to which of the following levels of the ecosystem?

A) Decomposers B) Destructors
C) Producers D) Consumers
 
Answer & Explanation Answer: C) Producers

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Q:

______ is a thyroid hormone which controls the balance of calcium in the body.

A) Calcitonin B) Thyroxine
C) Calmodulin D) all of these
 
Answer & Explanation Answer: A) Calcitonin

Explanation:

Calcitonin is 32-amino acid linear polypeptide hormone that is produced in humans primarily by the parafollicular cells of the thyroid, and in many other animals in the ultimopharyngeal body. It acts to reduce blood calcium, opposing the effects of parathyroid hormone.

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Q:

By which process substance like carbon dioxide or oxygen can move across the cell membrane?

A) Plasmolysis B) Sedimentation
C) Diffusion D) Transpiration
 
Answer & Explanation Answer: C) Diffusion

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Q:

In which of the following the dominant phase is Gametophyte?

A) Bryophyta B) Pteridophyta
C) Gymnosperms D) Angiosperms
 
Answer & Explanation Answer: A) Bryophyta

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Q:

Which kind of cell division is used to repair an injury by the body?

A) Mitosis only B) Meiosis only
C) Both Mitosis and Meiosis  D) Neither Mitosis nor Meiosis
 
Answer & Explanation Answer: A) Mitosis only

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Q:

Which of the following plants have root nodules?

A) Leguminous plants B) Parasitic plants
C) Epiphytic Plants D) Aquatic Plants
 
Answer & Explanation Answer: A) Leguminous plants

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Q:

A newborn human baby is fed with the first secretion called colostrum from mammary gland. What does colostrum impart?

A) Factors for growth B) Immunity
C) Sleepiness D) Nutrition for development
 
Answer & Explanation Answer: B) Immunity

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