(b)
Give biological reasons for the following statements
(0) Roughage is an important part of our diet.
Protoplasm can not be analysed chemically.
Some flowers are brightly coloured. Give reason.
(iv) Seeds sown deep in soil mostly fail to germinate. Give reason.
(v) Tilling of soil is useful for the crops.
Contd
Answers
Answer:
1)Roughage has long recommended to help with digestive issues like constipation, but it also plays many other important roles in our body.
2)Protoplasm has complex organic and living cell organelles which can disintegrate if chemicals are added to analyse. Also due to complexity of physical and chemical properties the ultimate chemical nature of protoplasm cannot be determined.
3)Some flowers are brightly coloured to attract insects and to increase the speed of pollination.
4)Seeds have food stored in them received from parent plant and oxygen is present between the soil particles at lower levels but since these seeds germinate are very fragile they can't cross the soil barrir if sown in deep soil and therefore do not gets sunlight which is stored in them do not germinate.
5)It filters the rainwater and regulate the discharge of excess rainwater and can store large amount of organic carbon.
Explanation:
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