Transportation in Animals and Plants - Class 7 - Science
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Back Questions - Transportation in Animals and Plants | NCERT | Science | Class 7
Match structures given in Column I with functions given in Column II.
Column I | Column II |
---|---|
(i) Stomata | (a) Absorption of water |
(ii) Xylem | (b) Transpiration |
(iii) Root hairs | (c) Transport of food |
(iv) Phloem | (d) Transport of water |
(e) Synthesis of carbohydrates |
(i) Stomata → (b) Transpiration
(ii) Xylem → (d) Transport of water
(iii) Root hairs → (a) Absorption of water
(iv) Phloem → (c) Transport of food
Fill in the blanks.
The blood from the heart is transported to all parts of the body by the __________.
Haemoglobin is present in _____________ cells.
Arteries and veins are joined by a network of _____________ .
The rhythmic expansion and contraction of the heart is called ___________.
The main excretory product in human beings is ____________ .
Sweat contains water and ___________ .
Kidneys eliminate the waste materials in the liquid form called __________.
Water reaches great heights in the trees because of suction pull caused by ___________.
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Sign up nowIn plants, water is transported through
(i) xylem
(ii) phloem
(iii) stomata
(iv) root hair
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Sign up nowWater absorption through roots can be increased by keeping the plants
(i) in the shade
(ii) in dim light
(iii) under the fan
(iv) covered with a polythene bag
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Sign up nowWhy is transport of materials necessary in a plant or in an animal? Explain.
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Sign up nowWhat will happen if there are no platelets in the blood?
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Sign up nowWhat are stomata? Give two functions of stomata.
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Sign up nowDoes transpiration serve any useful function in the plants? Explain.
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Sign up nowWhat are the components of blood?
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Sign up nowWhy is blood needed by all the parts of a body?
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Sign up nowWhat makes the blood look red?
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Sign up nowDescribe the function of the heart.
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Sign up nowWhy is it necessary to excrete waste products?
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Sign up nowDraw a diagram of the human excretory system and label the various parts.
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Sign up nowFind out about blood groups and their importance.
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Sign up nowWhen a person suffers from chest pain, the doctor immediately takes an ECG. Visit a doctor and get information about ECG. You may even look up an encyclopaedia or the internet.
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Sign up nowExtra Questions - Transportation in Animals and Plants | NCERT | Science | Class 7
Hibiscus leaf depicted in the image has a mesh-like network of veins. Therefore, it has venation.
A) Zigzag
B) Twisted
C) Crossed
D) Reticulate
The correct option is D) Reticulate.
Venation refers to the pattern of veins in the leaf blade. There are mainly two types:
Reticulate venation: where veins branch off from the main vein and form a complex network, resembling a net.
Parallel venation: where veins run parallel to each other throughout the leaf.
In the case of the Hibiscus leaf, the veins create a network or mesh-like structure, characteristic of reticulate venation. Thus, option D) Reticulate is the correct answer.
Which of the following criteria does not pertain to facilitated diffusion?
A. High selectivity
B. Transport saturation
C. Uphill transport
D. Requirement of special membrane proteins
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Sign up nowVessels differ from tracheids in many factors. Choose the correct factor from the following.
A. Being derived from a single cell.
B. Having vertical rows of cells with dissolved cross walls.
C. Being living tissues.
D. Helping in the conduction of water and minerals.
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