HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why do some trees have needles?
A
to conserve sugar
B
to conserve water
C
to conserve heat
D
needles are cool
Explanation: 

Detailed explanation-1: -Needles have a thick, waxy coating that retains more water than a regular leaf. Since needles don’t shed each fall they can capture sunlight for nearly the entire year.

Detailed explanation-2: -The leaves of the Pine tree are needle-shaped so that they can retain more water and helps the tree to survive in the winter season. The needle structure reduces the surface area and thus minimizes water loss.

Detailed explanation-3: -Coniferous trees have needle-shaped leaves, because it is easier to freeze flat broad leaves. Hence, if the leaves are small, then it becomes difficult to freeze them.

Detailed explanation-4: -Conifers have leaves that resemble needles and generally remain on a tree year-round.

Detailed explanation-5: -It can be used as an expectorant for coughs and to help relieve chest congestion; it is also good for sore throats. It brings you clarity and mental clearness. It can help with depression, obesity, allergies and high blood pressure.

There is 1 question to complete.