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प्रश्न
Fill in the blank.
....................... are present in the stem of pine tree that make the pinewood strong and durable.
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उत्तर
Resins are present in the stem of pine tree that make the pinewood strong and durable.
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संबंधित प्रश्न
Put a tick mark (✓) against the most appropriate alternative in the following statement :
In human beings, urea is produced in :
Differentiate between
excretion and transpiration
Given below is a simplified diagram of the human kidney cut open longitudinally. Answer the questions that follow.
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- Define excretion.
- Why does the cortex of the kidney show a dotted appearance?
- Why does the medulla of the kidney show a striped appearance?
- Write two differences in the composition of the blood flowing through the blood vessels 'A' and 'B'.
Given below is a diagram of a human kidney, cut open longitudinally. Answer the following:
(i) Give definition of excretion.
(ii) Name the unit of kidney.
(iii) Why does the cortex of kidney show dotted appearance?
(iv) List the functions of the kidney.
Choose the odd one out in the following series:
Proximal convoluted duct, loop of Henle, vein.
Draw a labeled diagram of the human kidney as seen in a longitudinal section.
Choose the Odd One Out:
Choose the correct option.
Which one of the following organisms would spend maximum energy in the production of nitrogenous waste?
Choose the correct option.
The minor calyx _______.
What would happen if green plants disappeared from earth?
