STD 11 - 4. Animal kingdom — BIOLOGY STD 11 Science — Question

The front part of the centrosome is made of protein, which is called:

Which of the following statements is correct?

The primary function of noradrenaline is :

In golgibody it is found …….

Which of the following is true for the dicot roots?

Assertion: Periplaneta Americana is nocturnal, omnivorous, household pest.
Reason: It is because it acts as scavenger.

Which of the following pairs are correctly matched

(1)Assimilatory roots      —       Photosynthesis

(2)Fasciculated roots     —       Food storage

(3)Stilt root                     —      Mechanical support

(4)Sucking root              —      Absorption of moisture from the air

Select the correct answer -

Sclerenchyma fibres are

Lack of which organelle, steroid hormones do not synthesis in animal cell ?

Constantly dividing cells, both at the root apex and shoot apex represents.