HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Important Questions for Biology

In Brassica (rapeseed, mustard)........................ varietys is resistant to Aphids.

(a) Pusa A-4
(b) Pusa Gaurav
(c) Pusa Sawni
(d) . Pusa Shubra

The antibiotic chloromycetin is obtained from ______.

R. Q. for proteins is about .......................

(a) 0.7

(b) 0.8

(c) 0.9

(d) 1.0

Give an example of the non-edible or poisonous mushroom, studied by you.

Name the secondary metabolites in Catharanthus roseus.

Name the organism and enzyme which brings about the alcoholic fermentation of sucrose.

What are 'biofertilizers'? Explain them with suitable examples.

Vijaya, Padma, Kanti and Jayanti are high-yielding varieties of ______.

The microbial source of vinegar is ______.

Give the meaning of the Nif gene.

Name the aquatic fern commonly used in paddy fields as a biofertilizer.

Give the names of ‘two’ insect-resistant crop varieties.

Give reason – ‘Archaeopteryx is called connecting link between reptiles and birds’.

Write a short note on ‘lac culture’.

Which of the following vitamins is not fat soluble?

(A) Vitamin A

(B) Vitamin B

(C) Vitamin D

(D) Vitamin K

What is VAM?

Name any two antibiotics with their microbial source.

What are transgenic plants? Explain with any two examples

Explain micropropagation and somatic hybridization.

Which growth hormone is used to enhance dairy productivity?