HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions for Biology

Which is the primary precursor of IAA in plants?

Write two applications of Auxins.

Write short note on Gene pool.

Give the name, type and origin of the following cranial nerve:

Number-II

Give the name, type and origin of the following cranial nerve:

Number-IV

Give the name, type and origin of the following cranial nerve:

Number-IX

Mention the name of a sterile animal produced by intergeneric hybridisation.

Define the term:

Genetic drift

Differentiate between sympathetic and parasympathetic nervous system with reference to the following:

1. Pre and post-ganglionic nerve fibres
2. Effect on heartbeat

Give reason – All spinal nerves are of mixed type.

Name the hormone that is responsible for apical dominance.

A farmer wants to remove broad-leaved weeds from the jowar plantation in his field. Suggest any plant hormone to remove such weeds.

Write the names of any four motor cranial nerves with their appropriate serial number.

Match the following

Write name, type and origin of following cranial nerve:

Number III

Write name, type and origin of following cranial nerve.

Number VI

Write name, type and origin of following cranial nerve:

Number X

Given below function performed by plant hormone. Which hormone is responsible for the given action?

Apical dominance

Give functions of synthetic auxin 2,4-D.

Classify the following to form Column B as per the category given in Column A:

(Nature trails, Pollination, Sea food, Carbon sequestration, Animal therapy, Pest control, Health care, Nutrient cycling.)