Q1: Describe the path taken by a water molecule from the soil until it reaches a mesophyll cell of a leaf to be made into sugar. Q2: What are the differences between xylem and phloem:
a. In structure
b. In function?

Q3: State briefly the functions of the following : xylem, root hair, root cap, epidermis.

Q4: Why do you think that root hairs are produced only on the parts of the root system that have stopped growing?

Q5: What structures help to keep the stem’s shape and upright position?

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Answer 1:

Water is taken up through the xylem until it reaches a leaf, where it diffuses outinto the surrounding mesophyll cells.Water diffuses from the mesophyll cellsto the surrounding intercellular air spaces as water vapour, and finally, out of theleaf through the stomata.

Answer 2:

Xylem and phloem facilitate the transportation of water, minerals and food throughout the plant. Xylemcarries water and minerals from the roots to the leaves. Whereas,phloem carries the food prepared by the leaves to different parts of the plant.

Answer 3:

XYlem- It helps in Conduction of minerals and water in Plant. Troot hains: - Troots haves absonb water from the soil. Epidermis- It Provide Protection Root Cap 

Answer 4:

Explanation: The function of root hairs is to help the plant absorb water and nutrients. Root hairs are part of the root system of the plant and their job is to increase the surface area of the roots, allowing them to take in more nutrients than if the roots were smooth.

Answer 5:

The vascular tissue contributes to the support of the plant. I think the xylem and phloem also help with support, but I'm unsure.

Explanation:

I hope ki mera answer sahi h

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'