Question

The evaporation of water from the surface ____ the body.
a) Heats
b) Cools
c) Moderates
d) None of these

Which is the largest artery in the body?
a) Pulmonary artery
b) Pulmonary vein
c) Aorta
d) Vena cava

Identify the modified stem:
a) Tulip
b) Potato
c) Cactus
d) Onion

Answer 1

Answer:

ans a none of these

ans c aorta

ans d onion

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Answer 2

Answer:

1)b) cools

2)c)Aorta

3)b) Potato and d) Onion

Explanation:

1)Evaporation is the process by which a liquid turns into a gas. It is also one of the three main steps in the global water cycle.

2)Being artery, pulmonary artery functions to carry deoxygenated blood from heart to the lungs and pulmonary veins functions to carry oxygenated blood from the lungs to the heart after its purification. The largest blood vessel present in the human body is Aorta, which is also the largest artery of the body.

3)a)Tulip has a modification of the underground stem known as the Bulb.

b)Though potato seems to be a root, it is a stem. It is actually a modified stem usually called tuber. As the tubers grow underground, they are connected by small stem sections called stolons. ... This is why potatoes are also called tuberous stems.

c)The cactus stems are modified into phylloclades. A phylloclade is a flattened stem of several internodes functioning as a leaf in some xerophytic plants. They contain chlorophyll and carry out photosynthesis.

d)The onion bulb is a modified stem because it consists of large numbers of fleshy scales leaves. At the base of the onion the root appears as a thread like structure.