Which one of the following is the true description of an animal concerned?

• Earthworm - The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard and intestine.

• Frog - Body divisible into three regions- head, neck and trunk

• Rat - Left kidney is slightly higher in position that the right one

• Rat - Left kidney is slightly higher in position that the right one

Which one of the following pair of items correctly belongs to the category of organs mentioned against it? 

• Thorn of  Bougainvillea and tendrils of Cucurbita - Analogous organs

• Nictitating membrane and blind spot in human eye - Vestigial organs

• Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs

• Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs

93.

In which one of the following preparations are you likely to come across cell junctions most frequently?

• Ciliated epithelium.

• Thrombocytes

• Tendon

• Tendon

Which of the following pairs are correctly matched?
Animals                          Morphological features
(i) Crocodile             -       4-chambered heart
(ii) Sea urchin          -        Parapodia
(iii) Obelia                -       Thecodont
(iv) Lemur                -       Thecodont

• A, C and D

• B, C and D

• Only A and D

• Only A and D

What is true about Nereis, Scorpion, Cockroach and Silver fish?

• They all have jointed paired appendages

• They all possess dorsal heart

• None of them is aquatic 

• None of them is aquatic 

Areolar connective tissue joins

• fat body with muscles

• integument with muscles

• bones with muscles

• bones with muscles

Earthworms are

• ureotelic when plenty of water is available

• ureotelic when plenty of water is available

• uricotelic under conditions of water scarcity

• uricotelic under conditions of water scarcity

Select the correct route for the passage of sperms in male frogs :

• Testes - Bidder's canal - Kidney - Vasa
  efferentia - Urinogenital duct - Cloaca

• Testes - Vasa efferentia - Kidney - Seminal
  Vesicle - Urinogenital duct - Cloaca

• Testes - Vasa efferentia - Bidder's canal -
  Ureter - Cloaca

• Testes - Vasa efferentia - Bidder's canal -
  Ureter - Cloaca

MALT constitutes about ___________ percent of the lymphoid tissue in human body.

• 50%

• 20%

• 70%

• 70%

Receptor sites for neurotransmitters are present on

• Membranes of synaptic vesicles

• Pre-synaptic membrane

• Tips of axons

• Tips of axons