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Class 10 Transportation|Life processes Important questions-5


In this page we have Important Questions for Class 10 Life processes Transportation -5 . Hope you like them and do not forget to like , social shar and comment at the end of the page.

Question 1

How do organisms like amoeba transport materials?

Answer

Amoeba is a unicellular organism. In unicellular organisms a single cell carries out all the life processes as the cell itself is the organism. The uptake of materials from the environment is through the general body surface and the transport within the cell is by diffusion.

Question 2

Why do higher plants and animals need a transportation system?

Answer

In higher plants and animals, the sites of absorption and synthesis are very specific and a greater distance from the other parts of the body. Thus, they need a transportation.

Question 3

What is mass flow system?

Answer

The transport of materials in bulk across the plant or animal body through the vascular tissue is called the mass flow system.

Question 4

Which transport system- plant or animal, does not use muscular energy?

Answer

Transport in plants does not use muscular energy.

Question 5

What are vascular plants?

Answer

The higher plants are also called the vascular plants as the transport in them is with the help of the vascular system.

Question 6

which are the materials transported in plants?

Answer

The materials transported across the plant body are water, minerals, food and metabolites like the hormones and vitamins.

Question 7

What are the two types of vascular tissues?

Answer

The two types of vascular tissues are xylem and phloem.

Question 8

What are the functions of xylem and phloem?

Answer

Xylem conducts water from the roots to the other parts of the plant and phloem conducts food from the leaves to the different parts of the body.

Question 9

Which tissue conducts organic substances in plants?

Answer

Phloem conducts organic substances in plants.

Question 10

Why are the sieve tube cells called so?

Answer

The sieve tube cells are joined end to end and their end walls are performed. This gives the appearance of a sieve and hence they are called as the sieve tube cells.

Question 11

What is the process by which carbon dioxide enters the cell?

Answer

The process by which carbon dioxide enters the cell is called diffusion.

Question 12

Define osmosis?

Answer

The process of movement of solvent particles from the region of higher concentration to the region of lower concentrations through a semi- permeable membrane is called osmosis.

Question 13

What is turgor pressure?

Answer

It is a positive pressure developed inside the cells due to pushing of the cytoplasm against the cell wall as cytoplasm gets more water.

Question 14

When does a cell become flaccid?

Answer

A cell becomes flaccid on losing water.

Question 15

What is active transport? Give an example.

Answer

Active transport is the transport are stomatal, lenticular and cutocular transpiration.

Question 16

What is transpiration?

Answer

It is the loss of water from the aerial parts of the plant in the form of water vapour

Question 17

What are the three types to transpiration?

Answer

The three types of transpiration are stomatal, lenticular and cuticular transpiration.

Question 18

What are stomata? Where are they present?

Answer

Stomata are opening on the surface of the leaves that are surrounded by the guard cells. They are present more on the lower surface of the leaves.

Question 19

How is the rate of transpiration affected?

Answer

The rate of transpiration is affected by many factors such as light, temperature, availability of soil water and atmospheric humidity.

Question 20

Why is transpiration affected?

Answer

Transpiration is important because:
  1. It is responsible for uptake of water from the soil.
  2. It is responsible for movement of water and dissolved minerals from the roots to different parts of the plants.
  3. It results in cooling of the leaf surfaces, thereby protecting them from excessive heat.

Question 21

What is ascent of sap?

 Answer

The upward movement of water along with the dissolved silutes up the xylem is called ascent of sap.

Question 22

What are the two factors responsible for ascent of sap?

Answer

The two factors responsible for ascent of sap are root pressure and transpiration pull.

Question 23

What are root hairs? What is their function?

Answer: Root hairs are outgrowths of the epidermal cells. They help in increasing the surface area of water absorption.

Question 24

What is root pressure?

Answer

The water enters the roots through the root hairs. It then travels through the root tissue to reach the root xylem. Therefore, the xylem in the root has more water than the xylem column above it and this creates a positive pressure in the xylem of the root. This is called the root pressure.

Question 25

 What is transpiration pull? What is its effect?

Answer: The force with which the water is pulled up the xylem is called the transpiration pull. The transpiration pulls results in a continuous stream of water called the transpiration stream extending from the xylem of the leaves to the xylem of the roots.

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