PLANT PHYSIOLOGY
PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is absorbed by the roots and travels up the stem into the leaves.
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It is absorbed by the leaves during rainfall.
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It is trapped by flower petals when it rains outside.
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It is absorbed by leaves and travels down to the roots to combine with carbon dioxide.
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Detailed explanation-1: -Essentially all of the water used by land plants is absorbed from the soil by roots. A root system consists of a complex network of individual roots that vary in age along their length. Roots grow from their tips and initially produce thin and non-woody fine roots.
Detailed explanation-2: -In most land plants, water enters the roots and is transported up to the leaves through specialized cells known as xylem (pronounced zigh-lem). Plants have a waxy cuticle on their leaves to prevent desiccation, or drying out.
Detailed explanation-3: -While plants can absorb water through their leaves, it is not a very efficient way for plants to take up water. If water condenses on the leaf during high humidity, such as fog, then plants can take in some of that surface water. The bulk of water uptake by most plants is via the roots.
Detailed explanation-4: -Xylem transports water, minerals, and nutrients from the soil to all the plant parts. There are two types of “transport” tissues in plants-xylem and phloem. Water and solutes are transported by the xylem from the roots to the leaves, and food is transported from the leaves to the rest of the plant by the phloem.