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

______ hormone is responsible for the efflux of K⁺ ions from guard cells and acts as an antitranspirant.

Abscisic acid is the common name given to two identical substances isolated separately. Name them.

Give the chemical features of abscisic acid.

Explain any three examples of biopiracy.

Which device is used to clean both dust and gases from polluted air?

Give a reason – ABA is also known as an antitranspirant.

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

Shedding of leaves

Observe the diagram and answer the given questions :

1. Identify stages A and B in the given diagram.
2. Give scientific name of lac insect.
3. What is a shellac?

Name the stress hormone in plants.

Describe abscissic acid physiological effects.

What is Texmati?

Identify the growth hormone in plants which causes inhibitory effect.

Which of the following is not a photosynthetic pigment?

Edible fruiting bodies are produced by _______.

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

Which of the following vitamins is not fat soluble?

(A) Vitamin A

(B) Vitamin B

(C) Vitamin D

(D) Vitamin K

Name any two edible mushrooms.

Photoreceptor cells are present in __________.

(A) blind spot

(B) retina

(C) cochlea

(D) cornea

Give the graphical representation of Hardy· Weinberg's principle in the form of Punnet Square.

Answer in ‘one’ sentence : 

From which microorganism is vinegar obtained?