EAMCET Zoology Model Questions with Key

1. Match the following:
LIST - I - LIST - II
A) Ichthyophis I) cauducibranchiate
B) Bufo II) Cave dweller & blind salamander
C) Amphiuma III) female shows parental
D) Proteus IV) paratoid glands
V) Scales absent

1) A-III, B-IV, C-I, D-V 2) A-III, B-V, C-I, D-II
3) A-III, B-IV, C-I, D-II 4) A-I, B-IV, C-II, D-III

2. Which one of the following has muscles, nerve cord and without coelom and viscera?
1) Tail 2) Abdomen 3) Thorax 4) both tail and abdomen

3. Assertion (A): Sarcopterygii is also known as Choanoicthyes
Reason (R): The members of that subclass have internal nares

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

4. A list of fishes are given below
A) Hexanchus B) Scoliodon C) Chimaera D) Heptranchus
Arrange them in descending order
1) D, A, B, C 2) C, B, A, D 3) D, B, A, C 4) B, D, A, C

5. Cylindrical tail presence of eyelids are characters of-
1) Perinnibranchiates 2) apodans 3) All urodeles 4) Cauducibranchiates

6. Acornworms are separated from chordates. This can be justified in the absence of
1) Gill slits 2) Nerve cord 3) Enterocoel 4) Notochord

7. Number os sacral vertebra(e) in amphibians is-
1) Two 2) Three 3) One 4) Nine

8. Study the following
1) Notochord persists throughout life in extant agnathans.
II) Number of gill slits is equal to the number of cranial nerves in extinct agnathans.
III) Ammocoete larva of lamprey resembles Amphioxus in many characters.
IV) The first vertebrates with renel portal system are cyclostomes.

Identify the WRONG statement
1) I 2) IV 3) II 4) III

9. Match the following
List-I - List-II
A) Siren I) Mud puppy
B) Proteus II) mud eel
C) Necturus III) cave dweller
D) Amphiuma IV) tiger salamander
V) congo eel

Choose the correct answer

1) A-I, B-III, C-II, D-V 2) A-II, B-III, C-I, D-V
3) A-II B-I, C-III, D-V 4) A-II, B-III, C-I, D-IV.

10. Study the following.
A) Test absent B) Atrium absent C) Open circulatory system D) Notochord present
The above description is related to the adult stage of
1) Amphioxus 2) Pyrosoma 3) Oikopleura 4) Herdmania

11. Read the following statements related to Phylum Chordata.
I) In vertebrates the notochord modified as vertebral column.
II) In lancelets the notochord is persistent throughout life.
III) In urochordates it is confined to tail throughout life.
IV) In adult mammals it is represented by nuclei pulposi.

Choose the correct statements.
1) I, II, III, IV 2) I & II only 3) II & III only 4) II & IV only

12. The structures that are absent in apodans area
1) tail, lungs, limbs 2) tail, girdles and limbs
3) vocal cords, tail, and copulatory organ 4) tail, sensory tentacle

13. Assertion (A): The heart of fish is a branchial heart.
Reason (R): It pumps only deoxygenated blood.
1) Both 'A' and 'R' are correct. R is correct explanation for A
2) A is true but R is false
3) Both 'A' and 'R' are correct but 'R' is not correct explanation for 'A'
4) Both 'A' and 'R' are false

14. All four fundamental characters of Phylum Chordata are retained throughout life by-
1) Oikopleura only 2) Branchiostoma only
3) both Oikopleura and Branchiostoma
4) both Botrylus and Branchiostoma

15. Read the following.
I) Multicellular mucus glands are present in the skin.
II) Ear drum and middle ear are present.
III) Male exhibits parental care.
IV) Gills and gill slits are absent in adults.

The above information confirms that the given organism is
1) A Hypotremate - Stegostema 2) Apodan - Icthyophis
3) Urodele - Ambystoma 4) Anuran - Midwife toad

16. The chief function of internal ear in fish
1) Hearing 2) Sound production 3) Equilibrium 4) Detect changes in water

17. Viviparous living fossil is-
1) Sphenodon punctatus 2) Latimeria chalumnae
3) Archaeopteryx lithographica 4) Limulus

18. Trilobed tail fin is the characteristic of-
1) Protopterus 2) Polypterus
3) Neoceratodus 4) Latimeria

Key: 1)3 2)1 3)1 4)1 5)4 6)4 7)3 8)2 9)2 10)3 11)4 12)2 13)3 14)3 15)4 16)3 17)2 18)4

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