Questions

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

_______________ the course of the development of different life-forms heredity—which, in plain English, is unconscious memory generated in the first life-form and ______________ through all the different species—is the sole factor in the ____________ of the parent properties; while adaptation to surrounding conditions and circumstances, natural selection in the struggle _____________ existence, and partner selection in the struggle of the males for ____________ are the principal factors in the differentiation of species.

natural selection in the struggle _____________ existence, and partner selection

___ are the carriers of heredity material.

Rickets is caused due to the deficiency of

How many bio-geographical zones are there in India?

An indifference curve measures ______________ level of satisfaction derived from different combinations of commodity X and Y.

The unemployment created at certain times of the year, when the demand for goods and services are lower than normal, is _____.

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate itby selecting the appropriate option.

There are _____ books on computer science in your school library, so you need to purchase them from the market.

Read each sentence to find out whether there is any error in any underlined part and indicate your response in the Answer Sheet against the corresponding letter i.e., (a) or (b) or (c). If you find no error, your response should be indicated as (d).