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Our Environment
Question
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What could be the reasons for adopting contraceptive methods?

Answer

The reasons for adopting contraceptives methods are:
i. To control the increasing populationof the country.
ii. To prevent unintended pregnancies.
iii Some contraceptive methods like condoms also prevent spread of STDs and lethal diseases like HIV-AIDS.
iv. It helps to maintains a woman's health by preventing unwanted pregnancies and by keeping space between consequitive pregnancies.

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Some More Questions From Our Environment Chapter

Name two organisms which reproduce by (a) budding (6) fragmentation and (c) spore formation.

Why cannot all multicellular organisms divide cell-by-cell like Spirogyra?

How is the problem of dobling of the amount of DNA solved ?

Write names of five plants in which stem is used to produce a new plant.

Give one example of plant which uses leaves for propagation. Draw propagation organ.

List four methods of vegetative propagation which are exploited by man in propagating plants in garden and nurseries.

Write five names of plants which are usually propagated by cutting method.

Name a ornamental plant which is grown by the vegetaive propagation of stem. 

What are the different types of asexual reproduction?

Describe the binary and multiple modes of asexual reproduction in organisms.