Please be patient as the PDF generation may take up to a minute.

1. In Biology ‘tissue’ is a level of organization between:

1.	cell and organ
2.	molecules and cell
3.	cells and organ system
4.	organ and organ system

2.

Consider following features:
A: Organ system level of organisation
B: Bilateral symmetry
C: True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics.
1. Annelida, Mollusca and Chordata
2. Annelida, Arthropoda and Chordata
3. Annelida, Arthropoda and Mollusca
4. Arthropoda, Mollusca and Chordata

3. Sea-hare, Tusk shell and Chiton belong to the phylum:

1.	Echinodermata	2.	Porifera
3.	Cnidaria	4.	Mollusca

4. In Echinoderms:

I:	Digestive system is complete with mouth on the lower (ventral) side and anus on the upper (dorsal) side.
II:	An excretory system is absent.

1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

5. How many of the given statements are true?
 

I.	Hemichordates have a rudimentary structure in the collar region called stomochord, a structure similar to notochord.
II.	Chordates possess a post anal tail and a closed circulatory system.
III.	In Cephalochordata, notochord is present only in larval tail.
IV.	In Urochordata, notochord extends from head to tail region and is persistent throughout their life.

1. 1
2.  2
3. 3
4. 4

6.

Air bladder is found in : 

 

1.	Osteichthyes	2.	Aves
3.	Cyclostomata	4.	Chondrichthyes

7.

Assertion (A) :	Reptiles are poikilotherms.
Reason (R) :	Reptiles possess eggs with shells which helped them to adapt in land environment.

 

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	Both (A) and (R) are false.

 

8. All of the following are poikilothermous animals except
1. Labeo
2. Hyla
3. Struthio
4. Alligator

9. Which of the following is not a characteristic of Amphibians?

1.	Most have two pairs of limbs and tail is present in some.
2.	Alimentary canal, urinary and reproductive tracts open into a common chamber called cloaca which opens to the exterior.
3.	Respiration is by gills, lungs and through skin.
4.	The heart is two chambered with one atrium and one ventricle.

10. Correctly identify the labelled parts of a hypothetical chordate showing the characteristics of chordate in the given figure:

	A	B	C	D
1	Nerve cord	Notochord	Gill slits	Terminal anus
2	Notochord	Nerve cord	Gill slits	Post anal tail
3	Nerve cord	Notochord	Gill slits	Post anal tail
4	Notochord	Nerve cord	Muscle myotome	Terminal anus