21.

Which one has no intermediate host?

• Taenia

• Ascaris

• Fasciola

• Plasmodium

In the wall of alimentary canal, what is the actual sequence from outer to inner

• serosa, longitudinal muscle, mucosa, submucosa

• mucosa, serosa, long muscle

• serosa, long muscle, circular, submucosa, mucosa

• serosa, long muscle, submucosa, mucosa

Bile helps in the digestion of fat through

• emulsification

• alkalinity

• forming micelles

• All of these

In frog chromosome number is reduced to half

• when 2nd polar body is separated

• when 2nd polar body is divided

• when 3rd polar body is separated

• when 1st polar body is separated

In diastole, heart is filled by

• mixed blood

• venous blood

• oxygenated blood

• deoxygenated blood

Periyar sanctuary is located in

• Madhya Pradesh

• Kerala

• Uttar Pradesh

• Assam

Which of the following is not an insect?

• Locust

• Lepisma

• Termites

• Spider

Which of the following represents the dental formula of man?

• $\frac{0.0.3.3}{3.1.3.3}$

• $\frac{2.0.3.3}{1.0.2.3}$

• $\frac{2.1.2.3}{2.1.2.3}$

• $\frac{1.0.0.3}{1.0.0.3}$

Which cells are found only in sponges?

• Amoeboid cells

• Choanocytes

• Pigment cells

• Gland cells

In photosythesis action and absorption spectrum were related by

• Von Helmont

• Engelmann

• Emerson

• Lavosier