In testis of frog, there are no

• Sertoli cells

• spermatocytes

• spermatids

• intestinal cells

If frog's brain is crushed, even then its leg moves on pinpointing. It is called

• simple reflex

• conditional reflex

• neurotransmitter function

• autonomic nerve condition

Fifth cranial nerve of frog is called

• vagus

• trigeminal

• optic

• ophthalmic

Which one of the following contains the largest quantity of extracellular material?

• epithelial tissue

• neural tissue

• Striated muscle

• Areolar tissue

Which tissue covered with calcium phosphate?

• Bone

• Muscles

• Mesenchyma

• Cartilage

Major protein of connective tissue is

• myosin

• collagen

• melanin

• keratin

Haemoglobin in earthworm is present in

• RBC

• protoplasm

• coelomic fluid

• plasma

Respiration pigment of blood in cockroach is

• haemozoin

• haemocyanin

• haemoglobin

• absent

One difference in breathing mechanism of frog and rabbit is that

• expansion of frog's lungs is not much

• abdominal movements more in frog

• diaphragm and rib muscles play important role in rabbit

• air reaching frog's lungs is to cool

Fertilization in earthworm is

• cross fertilization

• combined fertilization

• self-fertilization

• All of the above