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1001.

Why should we wash fruits and vegetables thoroughly before using?

Answer»

Why should we wash fruits and vegetables thoroughly before using?


1002.

Write notes. (a) Adulteration of food (b) Use of a refrigerator. (c) Cold stores.

Answer»

Write notes.



(a) Adulteration of food



(b) Use of a refrigerator.



(c) Cold stores.



1003.

Explain vegetative propagation with the help of an example.

Answer» Explain vegetative propagation with the help of an example.
1004.

Write a short note on structure & function of liver.

Answer» Write a short note on structure & function of liver.
1005.

Which of the following methods leads to loss of nutrients from food?

Answer»

Which of the following methods leads to loss of nutrients from food?

1006.

What are the components of urine? Which of these waste products is the main excretory product in human beings? What is removed along with water as sweat? [3 MARKS]

Answer» What are the components of urine? Which of these waste products is the main excretory product in human beings? What is removed along with water as sweat? [3 MARKS]
1007.

What causes movement of food inside the alimentary canal?

Answer» What causes movement of food inside the alimentary canal?
1008.

Why the plants of a snowy cold mountain and the plants of a hot arid desert are different in structure and shape? Snowy Mountain: Pine Tree Hot Desert: Cactus Plant

Answer»

Why the plants of a snowy cold mountain and the plants of a hot arid desert are different in structure and shape?

Snowy Mountain: Pine Tree Hot Desert: Cactus Plant


1009.

In each of the following cases recognize the vegetative part from which new plants can be grown.

Answer»

In each of the following cases recognize the vegetative part from which new plants can be grown.


1010.

Combined qualities of two different plants by means of artificial pollination is achieved by __________

Answer»

Combined qualities of two different plants by means of artificial pollination is achieved by __________


1011.

Match the following. ArteriesVeinsa) Pepsinogen is secreted byI)Liverb) Trypsin is secreted byII) Pancreasc) Bile is produced in III) Gall bladderd) Bile is stored inIV) Gastric glands

Answer»

Match the following.

ArteriesVeinsa) Pepsinogen is secreted byI)Liverb) Trypsin is secreted byII) Pancreasc) Bile is produced in III) Gall bladderd) Bile is stored inIV) Gastric glands


1012.

As there is a common passage for food and air. How does air only go to the lungs it can also escape to the stomach?

Answer» As there is a common passage for food and air. How does air only go to the lungs it can also escape to the stomach?
1013.

State whether the following are ‘True’ or ‘False’ A set of population of the world is an example for a finite set.

Answer»

State whether the following are ‘True’ or ‘False’



A set of population of the world is an example for a finite set.

1014.

In which method is a cut-out part of a plant grafted on another plant?

Answer»

In which method is a cut-out part of a plant grafted on another plant?



1015.

During exhalation, the ribs tend to ________ .

Answer»

During exhalation, the ribs tend to ________ .


1016.

Who is considered as the father of microbiology?

Answer»

Who is considered as the father of microbiology?


1017.

What is the role of HCL in stomach?

Answer» What is the role of HCL in stomach?
1018.

Buffalo is a _______.

Answer»

Buffalo is a _______.


1019.

Why is it not possible to distinguish particles of a solute from the solvent in the solution?

Answer»

Why is it not possible to distinguish particles of a solute from the solvent in the solution?
1020.

Why do you think it is necessary for the stomach to close its openings at both ends during digestion ?

Answer»

Why do you think it is necessary for the stomach to close its openings at both ends during digestion ?

1021.

The ancentors of modern day Frogs and salamanders are

Answer»

The ancentors of modern day Frogs and salamanders are



1022.

Which horizon of soil is rich in minerals?

Answer»

Which horizon of soil is rich in minerals?


1023.

Give a short notes on villus. [3 MARKS]

Answer»

Give a short notes on villus. [3 MARKS]

1024.

It is a common method of vegetative propagation in which 20-30 cm long pieces of one year old stems are cut, their lower ends are dipped in root promoting hormones and are then planted in the soil, which then develop adventitious roots. This method of vegetative propagation is performed in

Answer»

It is a common method of vegetative propagation in which 20-30 cm long pieces of one year old stems are cut, their lower ends are dipped in root promoting hormones and are then planted in the soil, which then develop adventitious roots. This method of vegetative propagation is performed in



1025.

Flowers which contain either pistil or stamen are called flowers.

Answer» Flowers which contain either pistil or stamen are called flowers.
1026.

Which of the following mineral is NOT required by our body?

Answer»

Which of the following mineral is NOT required by our body?


1027.

What is blind spot? Draw a diagram to show it location. [3 MARKS]

Answer»

What is blind spot? Draw a diagram to show it location. [3 MARKS]

1028.

Why do farmers spread fertilizers and manures in the fields?

Answer»

Why do farmers spread fertilizers and manures in the fields?

1029.

Deforestation causes

Answer»

Deforestation causes


1030.

Which structure in Amoeba helps to change its shape?

Answer»

Which structure in Amoeba helps to change its shape?


1031.

What is the primary source of energy that causes changes in weather?

Answer»

What is the primary source of energy that causes changes in weather?



1032.

The given picture shows the way Bala processed the food. Identify where she went wrong and why? 1. Washing the beans 2. Cutting the beans 3. Washing again

Answer»

The given picture shows the way Bala processed the food. Identify where she went wrong and why?

1. Washing the beans 2. Cutting the beans 3. Washing again


1033.

Which of the following are main functions of the large intestine?

Answer»

Which of the following are main functions of the large intestine?


1034.

Where was Haldi going? Why did Haldi stare at the giraffe? How did she reach school?

Answer»

  • Where was Haldi going?

  • Why did Haldi stare at the giraffe?

  • How did she reach school?

1035.

Which of the following is/are function(s) of the kidney?

Answer»

Which of the following is/are function(s) of the kidney?


1036.

State whether the following statements are true or false, with reasons: - [3 MARKS] i. Butter is an animal product. ii. Sweet potato is a fruit of the plant. iii. Groundnut Oil is obtained from the seeds of the groundnut.

Answer»

State whether the following statements are true or false, with reasons: - [3 MARKS]

i. Butter is an animal product.

ii. Sweet potato is a fruit of the plant.

iii. Groundnut Oil is obtained from the seeds of the groundnut.

1037.

Rose and jasmine plants are grown by artificial vegetative propagation. Why?

Answer»

Rose and jasmine plants are grown by artificial vegetative propagation. Why?


1038.

prokaryotic cells lack

Answer»

prokaryotic cells lack


1039.

Give reason of why algae are saprophytes

Answer» Give reason of why algae are saprophytes
1040.

What do you do before going to school? Put 'Y' for yes and 'N' for no.Disclaimer: Kindly refer the textbook for the images. Fill in the blanks with 'before' or 'after'. ________________ eating food, I wash my hands. ________________ reaching school, I sit in class. ________________ eating food, I wash my mouth. ________________ reaching home, I do my homework.

Answer»

  • What do you do before going to school? Put 'Y' for yes and 'N' for no.


Disclaimer: Kindly refer the textbook for the images.









  • Fill in the blanks with 'before' or 'after'.


________________ eating food, I wash my hands.



________________ reaching school, I sit in class.



________________ eating food, I wash my mouth.



________________ reaching home, I do my homework.
1041.

Where should the following food items be placed in the table?* Grapes* Raw Mangoes* CherriesMode of preservationFood item(a)Salt solution(A) ______(b)Sugar solution(B) ______(c)Drying(C) ______

Answer»

Where should the following food items be placed in the table?


* Grapes


* Raw Mangoes


* Cherries


Mode of preservationFood item(a)Salt solution(A) ______(b)Sugar solution(B) ______(c)Drying(C) ______
1042.

Identify the type of teeth in the image.

Answer»

Identify the type of teeth in the image.




1043.

Why orgnisms migrate over large distances?

Answer» Why orgnisms migrate over large distances?
1044.

What is incorrect about the steps in hemodialysis?

Answer» What is incorrect about the steps in hemodialysis?
1045.

Which of the following labelled food contains nutrients that are needed in small amount ?

Answer»

Which of the following labelled food contains nutrients that are needed in small amount ?


1046.

What are the functions of stomata in plants?

Answer»

What are the functions of stomata in plants?


1047.

Identify the organ of gaseous exchange in the organism shown in the picture:

Answer»

Identify the organ of gaseous exchange in the organism shown in the picture:


1048.

Recall where you have seen this sign before?

Answer»

Recall where you have seen this sign before?


1049.

Which of the follwoing cell organelle can convert solar energy into chemical energy?

Answer»

Which of the follwoing cell organelle can convert solar energy into chemical energy?


1050.

Which of the following organisms breathe through skin?

Answer»

Which of the following organisms breathe through skin?