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प्रश्न
A nail is inserted in the trunk of a tree at a height of 1 metre from the ground level. After 3 years the nail will
पर्याय
move downwards
move upwards
remain at the same position
move sideways
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उत्तर
remain at the same position
The nail will remain at the same position after 3 years, but will appear to have sunk into the tree. This is because of the secondary growth of the tree which increases the girth of a tree. The increase in height of the plant will occur due to primary growth which occurs only in the regions of the apical meristems i.e. at the tips of the main stem or branches. As increase in height of the tree takes place from top only, therefore the nail will remain at the same position as it is inserted near the ground level.
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संबंधित प्रश्न
Distinguish between the following pairs in one or two sentences for each
(a) RBCs and WBCs;
(b) bone and cartilage;
(c) blood and lymph.
(d) tendon and ligament
Name one place in living organisms where the following tissue is located:
Ligament
Differentiate between:
Bone and Cartilage
The question has four answers. Choose the correct answer:
Connective tissue connects
Answer the following question.
Why do animals in cold regions have a layer of fat below their skin?
What type of fibres are found in connective tissue matrix?
Differentiate between elastic fibres and elastic connective tissue.
Lining of blood vessels is made up of ______.
The two types of skeletal connective tissues are ______ and ______.
In which one of the following preparations you are likely to come across cell junction most frequently?
