Home
Class 11
BIOLOGY
Assertion : Cnidoblasts are present on t...

Assertion : Cnidoblasts are present on the tentacles and the body in cnidarians.
Reason : Cnidoblasts are used for anchorage, defence and capture of the prey.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Similar Questions

Explore conceptually related problems

Cnidoblast are present only in :

Assertion : Methanogens are present in the gut of several ruminant animals. Reason : Methanogens help in the production of methane from dung of ruminants.

Assertion : Ribosomes are non-membrane bound organelles found in the prokaryotic cells only. Reason : Ribosomes are present only only in the cytoplasm.

Assertion:In molluscs, feather-like gills are present in mantle cavity. Reason: These gills have respiratory and excretory functions.

Assertion: Nitrate present in the soil is reduced to nitrogen by the process of denitrification Reason: Denitrification is carried by bacteria Pseudomonas and Azotobacter.

Assertion : Morphine is very effective and sedative painkiller. Reason : It is very useful for the patients who have depression.

Assertion : Subsequent encounter with the same pathogen elicits a highly intensified anamnestic response. Reason : This is based on the fact that our body appears to have memory of the first encounter.

Assertion : In barrier methods, ovum and sperms are prevented from physical meetings Reason : Barrier methods are used during coitus, to prevent the entry of ejaculated semen into the female reproductive tract.

Assertion : IVF is fertilisation outside the body of woman Reason : The zygote upto 8 blastomeres could be transferred into the Fallopian tube

Assertion : Mucous membrane immobilises the micro-organisms in the body. Reason : Microoganisms and dust particles entering the respiratory tract are trapped in the mucus.