Explore topic-wise MCQs in 4th Class.

This section includes 1061 Mcqs, each offering curated multiple-choice questions to sharpen your 4th Class knowledge and support exam preparation. Choose a topic below to get started.

351.

Study the figure given below and answer the questions.                                     Which of these labelled parts of the plant anchor the plant to the ground?

A.  I                     
B.       II
C.  III                   
D.       IV
Answer» E.
352.

Plants make their own food and thus do not depend on others. Therefore, they are called:

A.  self made         
B.       parasites
C.  autotrophs       
D.       heterotrophs
Answer» D.       heterotrophs
353.

The four boxes P, Q, R and S given below contain the edible part of the plants. P Q R S Rice Pulses Mango Pumpkin Carrot  Turnip Potato Sugarcane A ginger can be placed in which of the four boxes given here?

A.  P                    
B.       Q
C.  R                    
D.       S
Answer» E.
354.

The tiny pores present on the leaves of plants are called

A.  stomata.                      
B.  cells.
C.  chlorophyll.      
D.       grains.
Answer» B.  cells.
355.

Which of the following is a root containing stored food?

A.          
B.       
C.             
D.       
Answer» E.
356.

A plant was kept in a dark room for a week. When its leaves were tested with iodine solution, it did not show the presence of starch. From this experiment we can conclude that _________ is required for photosynthesis.

A.  sunlight            
B.       iodine
C.  starch              
D.       darkness
Answer» B.       iodine
357.

When you eat sugarcane, you are actually eating the

A.  fruit of the sugarcane.
B.  root of the sugarcane.
C.  stem of the sugarcane.
D.  grains of the sugarcane.
Answer» D.  grains of the sugarcane.
358.

Plants store extra food in the form of

A.  oxygen.
B.  carbon dioxide.
C.  chlorophyll.
D.  starch.
Answer» E.
359.

Which of the following are called food factories of the plant?

A.  Leaves            
B.       Stem
C.  Roots              
D.       Flowers
Answer» B.       Stem
360.

From the statements given below, Neelima concluded that the dark red coloured croton plants in her garden cannot prepare food on its own. Statement A: Plants that appear green due to chlorophyll pigment are able to a synthesize their food.     Statement B: Photosynthesis cannot take place in plants that appear red.          Which of the following statements prove that her conclusion is wrong?

A.  Croton plants are green but do not contain chlorophyll.
B.  Croton plants are dark red in colour and do not contain chlorophyll.
C.  Croton plants have chlorophyll but it is hidden by the dark red coloured pigments.
D.  Croton plants do not have chlorophyll but they can prepare their own food.
Answer» D.  Croton plants do not have chlorophyll but they can prepare their own food.
361.

Leaves are green due to the presence of a green pigment called chlorophyll. The main function of chlorophyll is

A.  to absorb carbon dioxide from the atmosphere.
B.  to absorb water and minerals from the soil.
C.  to breathe.
D.  to perform photosynthesis in the presence of sunlight.
Answer» E.
362.

During which of the following times of the day does the process shown here takes place in Plants?

A.  6: 00 a.m only
B.  2: 00 p.m only
C.  11: 00 a.m only
D.  All the time
Answer» E.
363.

Observe the plant given below and identify its habitat based on the given clues. Clues:    1) It has no branches. 2) Leaves are reduced to spines.

A.  Hilly areas          
B.         Deserts
C.  Marshy areas
D.         Plains
Answer» C.  Marshy areas
364.

In cactus plants, photosynthesis occurs in

A.  leaves.                
B.  spines.
C.  roots.                  
D.  stems.
Answer» E.
365.

Match the following plants in Column-I with their examples in Column-II. Column-I Column-II p. Conifers          i. Pitcher q. Insectivorus plant     Ii, Cactus r. Desert plant       iii. Pine

A.  \[p-i,\text{ }q-ii,\text{ }r-iii~\]
B.  \[p-ii,\text{ }q-i,\text{ }r-iii\]
C.  \[p-iii,\text{ }q-i,\text{ }r-ii\]
D.  \[p-iii,\text{ }q-ii,\text{ }r-i\]
Answer» D.  \[p-iii,\text{ }q-ii,\text{ }r-i\]
366.

Which of the following have leaves without pores?

A.  Underwater plants
B.  Fixed plants
C.  Floating plants
D.  Evergreen plants
Answer» B.  Fixed plants
367.

Plants in hilly areas have to bear high speed winds and cold. Which of the following adaptations best helps them face the above conditions?

A.  Having lots of branches and leaves
B.  Tall and straight trunk with needle like leaves
C.  Leaves which are modified into spines
D.  Breathing roots which come above the ground
Answer» C.  Leaves which are modified into spines
368.

Which of the following are NOT adaptations of a cactus plant to the harsh environment? I. Needle-like leaves to prevent excessive water loss II. Broad and thin leaves to synthesise food III. Tall and slim stems to get more sunlight IV. Swollen stems to store water

A.  Only I and III
B.  Only II and III
C.  Only II and IV
D.  Only III and IV
Answer» C.  Only II and IV
369.

Match the following terms in Column-I with those in Column-II. Column -I Column ? II p. Pine   i. Aquatic plant q. Venus fly trap ii. Fungi r. Mould iii. Insectivorous plant s. Hydrilla iv. Cold climate

A.  \[p-ii,\text{ }q-iii,\text{ }r-iv,\text{ }s-i\]
B.  \[p-iii,\text{ }q-iv,\text{ }r-i,\text{ }s-ii\]
C.  \[p-i,\text{ }q-ii,\text{ }r-iii,\text{ }s-iv\]
D.  \[p-iv,\text{ }q-iii,\text{ }r-ii,\text{ }s-i\]
Answer» E.
370.

Which of the following plants has breathing roots?

A.  Banyan               
B.         Sugarcane
C.  Maize                  
D.         Mangrove
Answer» E.
371.

The plant given below is a cactus. It is able to survive in harsh conditions like the desert. Which of the following labelled parts represents modified leaves?

A.  Only P                                 
B.  Only Q
C.  Only R                 
D.         Only P and Q
Answer» C.  Only R                 
372.

In which of the following regions do plants shed their leaves during the winter season?

A.  Deserts              
B.         Plains
C.  Cold regions     
D.         Water bodies
Answer» D.         Water bodies
373.

Which of the following has aerial roots?

A.  Lotus                                   
B.  Sunflower
C.  Banyan               
D.         Mango
Answer» D.         Mango
374.

In which of the following plants are stoma present on the upper surface of the leaf?

A.  Desert plants
B.  Floating plants
C.  Land plants
D.  Aerial plants
Answer» C.  Land plants
375.

Shreya plucked a lotus plant from a pond near her house. She observed that it has a long hollow stem. Can you explain the function of the stem?

A.  To help leaves float on water
B.  To absorb soil
C.  To fix the plant to the bottom of the pond
D.  To make the flower beautiful
Answer» B.  To absorb soil
376.

A lotus plant has

A.  needle like leaves.
B.  very thin leaves.
C.  long leaves.
D.  broad leaves.
Answer» E.
377.

Study carefully the classification table shown below. Which of the following is most likely to be S and T?

A. S T Mushroom Yeast
B. S T Yeast Mushroom
C. S T Fern Mould
D. S T Mould Fern
Answer» D. S T Mould Fern
378.

A cactus plant is able to survive in deserts by

A.  not having leaves.
B.  not having fruits.
C.  not having flowers.
D.  not having roots.
Answer» B.  not having fruits.
379.

Some girls came across a plant. The sketch that one of them made is shown below. In which of the following groups can this plant be placed in?                 Group P Grows from  spores Group Q Bears  Flowers Group R Makes its own food

A.  Only groups P and Q
B.  Only groups Q and R
C.  Only groups P and R
D.  Groups P,Q and R
Answer» D.  Groups P,Q and R
380.

We all know that animals eat plants. But there are some plants which eat small insects. Such plants are called insectivorous plants. Which of the following is an example of them?

A.  Vallisneria                         
B.  Venus fly trap
C.  Duckweed        
D.         Jasmine
Answer» C.  Duckweed        
381.

Look carefully at the classification table given below. What could P and Q represent?

A. P Q Floating Fixed
B. P Q Floating Fully submerged
C. P Q Partially  submerged Floating
D. P Q Partially  submerged Fully submerged
Answer» B. P Q Floating Fully submerged
382.

Which of the following functions is also performed by the roots of the mangrove plant. Besides taking in water and mineral salts from the soil?

A.  Absorption of food
B.  Absorption of water
C.  Food storage
D.  Breathing of air
Answer» E.
383.

A venus flytrap plant closes its leaves to trap insects. This shows that the plant is

A.  reproducing.
B.  respiring.
C.  responding to stimulus.
D.  moving from one place to another.
Answer» D.  moving from one place to another.
384.

Given below is a list of some plants and the habitats in which they live. Which one is wrongly matched?

A. Plant Habitat Mangroves Marshy areas
B. Plant Habitat Coconut Coastal areas
C. Plant Habitat Cactus Hilly areas
D. Plant Habitat Mango Plains
Answer» D. Plant Habitat Mango Plains
385.

The features of the given cactus plant is designed to (i) protect the plant from being eaten by animals. (ii) prevent the plant from losing too much water. (iii) protect the plant from other plants.

A.  Only (iii)
B.  Only (i) and (ii)
C.  Only (ii) and (iii)
D.  (i), (ii) and (iii)
Answer» C.  Only (ii) and (iii)
386.

Hydrilla and tape grass plants are

A.  floating plants.
B.  fixed plants.
C.  under water plants.
D.  Both a and b
Answer» D.  Both a and b
387.

Plants adapt themselves to surroundings. Can you identify the features in the plants shown in the figure which help them to adapt to their surroundings. Match the plants with the features given below.I.II.III.IV.p. prickly spinesq. breathing rootsr. broad, wax coated leavess. needle shaped leaves

A.  \[I-p,ll-q,lll-r,IV-s\]
B. \[I-q,II-r,III-s,IV-p\]
C.  \[I-s,II-r,III-q,IV-p\]
D.  \[I-r,II-p,III-s,IV-q\]
Answer» E.
388.

The plants that are most useful to man are

A.  hilly plants.
B.  underwater plants.
C.  desert plants.
D.  plants of the grass family.
Answer» E.
389.

Which of the following statements is FALSE regarding hilly trees like the Pine?

A.  They do not have flowers.
B.  They are dome shaped.
C.  They are conifers.
D.  Their leaves are needle-shaped.
Answer» C.  They are conifers.
390.

One of the following plants is NOT matched correctly with its habitat. Which one of these is it?

A. PlantHabitatCedarPlains
B. PlantHabitatCactusDeserts
C. PlantHabitatMangoPlains
D. PlantHabitatMangrovesMarshy areas
Answer» C. PlantHabitatMangoPlains
391.

Ramu brought a plant with thick branches and leaves from the plains and planted it in a marshy area. What must the new plant do to survive in its new environment?

A.  It must change its colour in its new environment.
B.  It must change its leaves into spines to reduce the loss of water.
C.  It must start trapping insects and eat them.
D.  It must develop breathing roots to get more air.
Answer» E.
392.

Abhi knew that plants adapt themselves to the conditions in the environment in which they live. He observed a plant and noticed the following characteristics: (i) It has lots of branches and Leaves (ii) It can with stand summer heat (iii) It sheds its leaves in the autumn But he is confused to identify what kind of plant it is. Can you help him?

A.  It is a plant that grows in plains.
B.  It is a plant of hilly areas.
C.  It is a plant that lives under water.
D.  It is a plant that grows in marshy areas.
Answer» B.  It is a plant of hilly areas.
393.

The only planet with life in the solar system is

A.  Jupiter.                        
B.  Mercury.
C.  Mars.              
D.       Earth.
Answer» E.
394.

Which of the following correctly shows the order of planets with the increase in distance from the sun?

A.                                   Mercury \[\downarrow \] Mars \[\downarrow \] Earth \[\downarrow \] Saturn \[\downarrow \] Uranus \[\downarrow \] Jupiter \[\downarrow \] Venus \[\downarrow \] Neptune \[\downarrow \]
B.             Mercury \[\downarrow \] Venus \[\downarrow \] Earth \[\downarrow \] Mars \[\downarrow \] Jupiter \[\downarrow \] Saturn \[\downarrow \] Uranus \[\downarrow \] Neptune \[\downarrow \]            
C.                                     Jupiter \[\downarrow \] Saturn   \[\downarrow \] Uranus \[\downarrow \] Neptune \[\downarrow \] Earth \[\downarrow \] Venus \[\downarrow \] Mars \[\downarrow \] Mercury \[\downarrow \]            
D. Mars \[\downarrow \] Mercury \[\downarrow \] Venus \[\downarrow \] Earth \[\downarrow \] Neptune \[\downarrow \] Uranus \[\downarrow \] Saturn \[\downarrow \] Jupiter \[\downarrow \]
Answer» B.             Mercury \[\downarrow \] Venus \[\downarrow \] Earth \[\downarrow \] Mars \[\downarrow \] Jupiter \[\downarrow \] Saturn \[\downarrow \] Uranus \[\downarrow \] Neptune \[\downarrow \]            
395.

Rotation is a movements of:

A. Earth around the sun.     
B. Earth on its axis.
C. Mars around the sun.      
D. Venus around the sun.
E. None of these
Answer» C. Mars around the sun.      
396.

Light year is distance travelled by:

A. Moon in one year.          
B. Jupiter in one year.
C. Light in one year.           
D. Sun is one year.
E. None of these
Answer» D. Sun is one year.
397.

The imaginary line dividing the earth into two halves is called

A.  the equator.     
B.       half line.
C.  the orbit.          
D.       path.
Answer» B.       half line.
398.

The movement of the earth on its own axis is called axis

A.  rotation.
B.  revolution.
C.  constellation.
D.  Both [b] and [c]
Answer» B.  revolution.
399.

A _____ is a luminous ball that is held together by its own gravitational pull.

A. Star                 
B. Moon
C. Earth    
D.        Planet
E. None of these
Answer» B. Moon
400.

When we see more than half of the moon, this phase of moon is know as:

A. Crescent moon  
B. Gibbous moon
C. Full moon         
D.        New moon
E. None of these
Answer» C. Full moon