NCERT based zoology practical/Lab questions and answers

HIGHER SECONDARY
PRACTICAL EXAMINATION-2021
ZOOLOGY


Time:1 Hrs Total score: 20

,HIGHER SECONDARY PRACTICAL EXAMINATION -2021




Possible Question.1
Invertebrates




ZOOLOGY

, HIGHER SECONDARY PRACTICAL EXAMINATION -2021


Invertebrates 
Any 5 from below

Hydra,

Identify the given invertebrate animal. 
Liverfluke,

Write one identifying character/one 
Ascaris,
economic importance/ one 
Leech,
adaptation. 
Earthworm,

 Score 1

Silkworm,

Identification – 1⁄2 score

Honeybee,

One Value Point -1⁄2 score

Pila,

Starfish

ZOOLOGY

, HIGHER SECONDARY PRACTICAL EXAMINATION -2021

HYDRA

Identifying character

The body is elongated, tubular and radially symmetrical.

Mouth is surrounded by 6-10 tentacles.

Anterior end with a conical projection called hypostome.

Base of the body is flat and has basal disc.


Adaptation


Tentacles are armed with defensive of stinging cells.

Hydra is capable of movements in response to light, chemicals
and to food


ZOOLOGY