Multiple Choice QuestionsOne of the most important functions of botanical gardens is that
one can observe tropical plants there
they allow ex situ conservation of germplasm
they provide the natural habitat for wild life
they provide a beautiful area for recreation
Assertion : Consciousness is considered as the defining property of living organisms.
Reason : All organisms, from the prokaryotes to the most complex eukaryotes can sense and respond to environmental stimuli.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
India is one of the twelve megadiversity countries with of genetic resources of the world
12.1%
18.1%
38.1%
8.1%
Which of the following is correctly matched without exception in regard to plant classification?
Family - Poaceae - ae
Division - Pteridophyta - phyta
Class - Bryopsida - sida
Genus - Solanum - um
Match the following columns and select the correct option.
| Column I | Column II |
| A. Panthera tigris | (i) Mango |
| B. Magnifera indica | (ii) Common Indian frog |
| C. Musca domestica | (iii) Cockroach |
| D. Periplaneta americana | (iv) Tiger |
| E. Rana tigerina | (v) House fly |
A- (ii); B- (v); C- (i); D- (iii); E- (iv)
A- (iv); B- (i); C- (v); D- (iii); E- (ii)
A- (ii); B- (v); C- (iii); D- (i); E- (iv)
A- (iv); B- (i); C- (v); D- (ii); E- (iii)
Assertion : Senescence is the time when age associated defects are manifested.
Reason : Certain genes may be undergoing sequential switching on and off during one's life.
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
If both Assertion and Reason are true but the Reason is not the correct explanation of the assertion
If Assertion is true but Reason is false
If both Assertion and Reason are false
A.
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Process of ageing is called senescence.
In humans, aging is associated with degenerative changes in the skin, bones, heart, blood vessels, lungs, nerves, and other organs and tissues. It is genetically controlled programme regulated by regulatory genes. Example, the great range of lifespans among different animal species from a few days in the fruit fly to more than 100 years in some tortoises. Scientists have recently learned how to double the lifespans of such laboratory organisms as roundworms and fruit flies through genetic manipulation, and mutant genes in mice have been observed to have a comparable effect in postponing ageing.
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