D. Choose the correct option to fill in the blanks.
1. Leaves release water as vapour into the atmosphere through-
(transpiration/evaporation).
2. The part of stem from where leaves arise is called-
(node/internode)
3. The root system in which the primary root gives rise to the secondary roots is called-
(fibrous root/taproot) system.
4. In a compound leat, the lamina is divided, and the divisions-
(reach the midrib/do not reach the midrib).
5. Leaves are modified into tendrils for-
(support/protection).
Answers
1)transpiration
2)node
3) taproot
4) reach the midrib
5) protection
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Answer:
1) transportation
2) node
3) taproot
4) reach the midrib
5) support
Explanation:
1) transpiration is the loss of water in the form of vapour from plant leaf surface, while evaporation is loss of water in the form of vapour directly.
2) Node is the region on the stem from where the leaves arise, while internode the distance between the two nodes.
3) taproot is the primary root develops from the radicle of the seed from which lateral roots arise, while fibrous roots are bunch of adventitious roots.
4) A leaf is said to compound if the lamina is divided and it reaches the midrib forming leaflets.
5) tendrils are coiled spring like structures, the modified petioles and leaf of the plants that are helpful for climbing the support to retain more sunlight for photosynthesis.