NCERT Class 9 Science-Improvement in Food Resources[Food Resources] [NCERT Based General Studies (GS)]: Questions 1 - 5 of 23

Access detailed explanations (illustrated with images and videos) to 4879 questions. Access all new questions- tracking exam pattern and syllabus. View the complete topic-wise distribution of questions. 3 Year Validity- Access Unlimited Times on Unlimited Devices.

View Sample Explanation or View Features.

Rs. 750.00 -OR-

How to register? Already Subscribed?

Question 1

NCERT Class 9 Science Improvement in Food Resources[Food Resources]Crop Variety Improvement

Question MCQ▾

Hybridization produces:

Choices

Choice (4)		Response
a.	Vigorous and better adapted varieties which brings superior characters
b.	Creation of new genotype, HYV plant dwarf in height
c.	Responsive to fertilizers and takes less time for ripening
d.	All a., b. and c. are correct

Edit

Question 2

NCERT Class 9 Science Improvement in Food Resources[Food Resources]Crop Variety Improvement

Question MCQ▾

Why need arise to varietal/crop improvement?

Choices

Choice (4)		Response
a.	Increased yield and improved quality
b.	To produce varieties resistant to biotic and abiotic stresses, early and uniform maturity
c.	Desirable agronomic characters
d.	All a., b. and c. are correct

Edit

Question 3

NCERT Class 9 Science Improvement in Food Resources[Food Resources]Crop Protection Management

Question MCQ▾

Preventive measures against crop pests are:

Choices

Choice (4)		Response
a.	Use of pest and disease resistant hybrid
b.	Optimum time of cropping AND Crop rotation, multiple cropping, clean cultivation
c.	Summer ploughing
d.	All b., a. and c. are correct

Edit

Question 4

NCERT Class 9 Science Improvement in Food Resources[Food Resources]Crop Protection Management

Question MCQ▾

The plants live at the expense of main crop are called as:

Choices

Choice (4)		Response
a.	Unwanted plants
b.	Weeds
c.	Pests
d.	All a., b. and c. are correct

Edit

Question 5

NCERT Class 9 Science Improvement in Food Resources[Food Resources]Crop Protection Management

Question MCQ▾

Weeds are harmful to the plants:

Choices

Choice (4)		Response
a.	Spreading insect pests, produces the toxic substance which may interfere in crops growth
b.	Because they decrease the crop yield, compete with main crop for the nutrients, water as well as sunlight
c.	May produce the weed poison
d.	All a., b. and c. are correct

Edit