CBSE Class 8 - Science - Chapter 1 - Crop Production and Management (Questions and Answers)

Crop Production and Management 

Types of Crops (based on Seasons)

Questions and Answers based on Class 8 NCERT Chapter

Q1: Define agriculture.

Answer: It is a science that deals with the growth of plants and animals for human use is called agriculture.

Q2: Define Crop

Answer: When plants of the same kind are grown and cultivated at one place on a large scale, it is known as a crop. For example, crop of wheat means that all the plants grown in a field are that of wheat.

Q3: What are agricultural practices?

Answer: All the activities which are involved in the cultivation of crops from sowing to harvesting are known as agricultural practices.

Q4: Why does India need improved agricultural practices?

Answer: Following are the reasons that India need improved agricultural practices:

i. India's population is around 1.20 Billion and it is growing faster than its ability to produce wheat and rice.
ii. To provide sufficient food to such a large population, it is required to maintain regular production and proper crop management.
iii. It requires an improvement in agricultural practices and application of latest technology.


Q5: List the seven agricultural practices.

Answer:
i.   Preparation of soil
ii.  Sowing
iii. Adding manure and fertilisers
iv.  Irrigation
v.   Protecting from weeds
vi.  Harvesting
vii. Storage

CBSE Class 6 - Science - Chapter 1 - Food: Where Does It Come From? (Worksheet)

Food: Where Does It Come From?

Different Types of Foods
(credits: wikimedia)

Worksheet

Q1: Ingredients are used to prepare food. Write down the sources of the following ingredients?

Food Item	Ingredients	Sources
(a) Idli	Rice	Plant
	Urad Dal	_____________
	Salt	_____________
	Water	_____________
(b) Kheer	Milk	Animal
	Rice	_____________
	Sugar	_____________
(c) Chicken Curry	Chicken	_____________
	Spices	_____________
	Oil	Plants/Animals
	Water	_____________
(d) Jalebi	Maida	_____________
	Saffron	____________
	Ghee	_____________
	Sugar	_____________

Q2: Give two examples of the following:

Herbivores: ____________________________________________________

Carnivores: ____________________________________________________

Omnivores : ____________________________________________________

Plants whose stem is edible: ________________________________________

Plants whose roots are edible: ______________________________________

Scavengers: _________________________________________________________

CBSE Class 10 - Biology - Heredity and Evolution - Do Not Miss These Important Definitions and Terms

Heredity and Evolution

Important Definitions and Terms

Q1: Define Genetics

Answer: Genetics is the branch of Biology which deals with the study of heredity and variation.


Q2: Define Heredity

Answer: Heredity refers to process by which certain features (inheritable) are transmitted from parent to offspring.


Q3: Define Variation

Answer: Offspring of same parents do not exactly resemble each other as well to their parents. It is called variation.


Q4: What are analogous organs?

Answer: The organs that have same functions but different structures and origin are called analogous organs. e.g. the wings of a bat and the wings of an insect are analogous.


Q5: What are homologous organs?

Answer: The organs that have the same structure, origin and components but may be performing different functions are called homologous organs. Eg: hands of a human and the forelimbs of a horse.


Q6: What are vestigial organs?

CBSE Class 7 - Science - CH17 - Forests: Our Lifeline (MCQs)

Forests: Our Lifeline

Can You Identify Trees by looking at these leaves?
(Answer given below)

MCQs

Q1: The covering of large trees that serve as a roof to shelter an area or other plants in forests is called ___________.

(a) Canopy
(b) Crown
(c) Carnival
(d) none of these



Q2: Green plants synthesize their food by the process of __________

(a) Respiration
(b) Photosynthesis
(c) Crown
(d) Reproduction



Q3: Green plants are also referred as _________

(a) Consumers
(b) Producers
(c) Decomposers
(d) Herbivores


Q4: Tigers, Lions, Leopards belong to which of the following group?

(a) Producers
(b) Herbivores
(c) Decomposers
(d) Carnivores

Who is Who (General Awareness Q and A)

Who IS Who?

General Knowledge Quiz

Q1: Who is Railways Cabinet Minister in Indian Central Government?

Answer: Suresh Prabhu



Q2: Who is Human Resource Development minister?

Answer: Smt Smriti Zubin Irani



Q3: Who is the chief Minister of Gujarat?

Answer: Anandiben Patel


Q4: Who was the first President Of India?

Answer: Dr. Rajendra Prasad

CBSE Class 6 - Science - CH 16 - Garbage In Garbage Out (Worksheet)

Garbage In Garbage Out

Landfill (Image Courtsey: pixabay)

Class 6 - Science - Worksheet

Fill In the Blanks

1. Solid waste generated in our homes is called domestic waste. It is commonly called as ___________.


2. ________ are the large open areas used to dispose solid waste.


3. ________ are called farmer's friends and are used in vermi-composting.


4. _______ is a domestic liquid waste.


5. The rotting and conversion of some materials into manure is called _____________.


Mark True or False

6. Compost is an organic matter used as fertilizer.     (T/F)

CBSE Class 8 - Science - Chapter 8 - Cell Structure and Functions (Q and A)

Cell Structure and Functions

Questions and Answers based on NCERT Chapter

Q1: Define Cell 

Answer: Cell is the basic structural and functional unit of life.


Q2: Who was the first person to see the cell?

Answer: Robert Hooke, who was the first person to see the cell, in 1665 observed slices of cork under a simple magnifying device.


Q3: What is cork made up of?

Answer: It is a part of the bark of a tree and is made of dead cells.


Q4: Can we see cells with unaided eye?

Answer: Usually animal and plant cells are so small that these can't be seen by the unaided eye. We need a microscope to observe cells. There are few exceptions like hen's egg cell or ostrich's egg which is made up of one large cell that can be seen by an unaided eye.


Q5: Name the largest cell.

Answer: Ostrich's egg.


Q6: What does "cellula" mean in Latin?

Answer: It means a small chamber.


Q7: Name the scientist who discovered nucleus of the cell?

Answer: Robert Brown