EASY
9th CBSE
IMPORTANT
Earn 100

The unwanted plants which grow with main crops are called

50% studentsanswered this correctly

Important Questions on Competition Corner-3

EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
Which one is not a biofertilizer?
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
The example of 'green manure' is
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
Root nodules of leguminous plants contain
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
The enrichment of water bodies with nutrients leading to excessive growth of phyto plankton is known as
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
To solve the food problem of the country, which among the following is necessary?
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
Find out the correct sentence.
(i) Hybridization means crossing between genetically dissimilar plants.
(ii) Cross between two varieties is called as interspecific hybridization.
(iii) Introducing genes of desired character into a plant gives genetically modified crop.
(iv) Cross between plants of two species is called as inter - varietal hybridization.
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
Weeds affect the crop plants by
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 18 - Competition Corner-3>Exercise: Improvement In Food Resources
Find out the correct sentence about manure.
(i) Manure contains large quantities of organic matter and small quantities of nutrients.
(ii) It increases the water holding capacity of sandy soil.
(iii) It helps in draining out of excess of water from clayey soil.
(iv) Its excessive use pollutes environment because it is made of animal excretory waste.