Biology Questions

Q:

Sponges belongs to the phylum

A) Protozoa B) Annelida
C) Porifera D) Cnidaria
 
Answer & Explanation Answer: C) Porifera

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Q:

What is the basis of first level of classification among plants?

A) Differentiated plant body B) Specialised tissues
C) Ability to bear seeds D) No option is correct
 
Answer & Explanation Answer: A) Differentiated plant body

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Q:

In a Punnett Square with the cross AaBb x Aabb, how many AaBb genotypes would be created?

A) 4 B) 1
C) 7 D) 6
 
Answer & Explanation Answer: A) 4

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Q:

Which of the following classes of animals has/have three-chambered heart?

A) Pisces and Amphibia B) Amphibia and Reptilia
C) Reptilia only D) Amphibia only
 
Answer & Explanation Answer: B) Amphibia and Reptilia

Explanation:

Mammalian and avian hearts have four chambers two atria and two ventricles.Amphibians and reptiles, by contrast, have a three-chambered heart. The three-chambered heart consists of two atria and one ventricle.Fish possess the simplest type of true heart a two-chambered organ composed of one atrium and one ventricle.

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Q:

The saliva in human beings contains which enzyme?

A) Pepsin B) Salivary Amylase  
C) Rennin D) Trypsin
 
Answer & Explanation Answer: B) Salivary Amylase  

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Q:

Banana freckle is a plant disease. It is caused by a

A) Virus B) Insect
C) Fungus D) Bacteria
 
Answer & Explanation Answer: C) Fungus

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Q:

Taenia (Tapeworm), Fasciola (Liver fluke) are examples of which Phylum?

A) Coelenterata B) Platyhelminthes
C) Annelida D) Arthropoda
 
Answer & Explanation Answer: B) Platyhelminthes

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Q:

All of the following are true about color blindness except

A) it seems to be more common in women than men. B) people are either unable to distinguish two or more hues from each other or unable to see hue at all.
C) color blindness has no easy method of detection. D) it involves missing or damaged cones.
 
Answer & Explanation Answer: A) it seems to be more common in women than men.

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