Q2 of 465 Page 59

Ganga 5 is the variety of ...

Maize

It is one of the hybrid variety of maize in India.


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31

The figure shows two crop fields (plots A and B) have been treated by manures and chemical fertilizers, respectively, keeping other environmental factors same. Observe the graph and answer the following questions:


(i) Why does plot B shows sudden increase and then gradual decrease in yield?


(ii) Why is the highest peak in plot A graph slightly delayed?


(iii) What is the reason for the different pattern of the two graphs.

 1

Beekeeping known as

 3

Concentrates are low in fibres but rich in proteins and other nutrients.

 4

Match the items of column I and II











Column I



Column II



1. Green manure


2. Micronutrient


3. Catla


4. Kasturi



(a) Carp


(b) Rice


(c) Iron


(d) Cluster bean (guar)