SSC (Marathi Semi-English) १० वीं कक्षा - Maharashtra State Board Important Questions

Write short notes based upon the information known to you.

Darwin’s theory of natural selection

Explain the mechanism of hereditary changes.

Survival of fittest : Darwin : : Acquired characters : ..............................

a) Explain in brief - Lamarck’s principle of ‘use or disuse of organs’.
b) Give two examples.
c) What are ‘acquired characters’?

State Darwin’s theory of evolution.

What are the components of the DNA molecule?

Observe the following figure and explain the concept.

State whether the statement is true or false:
Aquatic animals breathe at a slower rate than the terrestrial animals.

Given below are the end products of different reactions involving glucose.

Write the reaction number in front of the following:
(i) Anaerobic reaction =
(ii) Reaction in the human muscles =
(iii) Aerobic respiration =
(iv) Reaction in the plant cells =
(v) Reaction in the liver

Carbon dioxide enters into the leaves through tiny pores present on the surface of the leaf called _________.
(a) chlorophyll
(b) chloroplast
(c) stomata
(d) epidermis

Cellular respiration takes place in
(a) Lysosome
(b) Chlorophyll
(c) Mitochondria
(d) Ribosome

The exchange of respiratory gases in the cells of plants occurs by the process of _______________

(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation

Give scientific reason.

Cell division is one of the very important properties of cells and living organisms.

We get ______ energy from carbohydrates.

Write the correct option from the given multiple options.
Which of the following vitamin is necessary for synthesis of NADH₂?

Where and in which forms the amino acids formed after digestion of food are used in the body?

Answer the following questions.

a) Why some living organisms have to perform anaerobic respiration?
b) Give examples of such living organisms.
c) What are the two steps of anaerobic respiration?

List the organs of Human respiratory system. 

Rewrite the following statement by selecting the correct option. 
During respiration, ____________ gas is given out.

Which of the following vitamins is necessary for the synthesis of NADH₂?