(a)
Food Production
Mock can
Fig. 8.5 (a) Saffron comes from the pistils of Crocus sativus flowers. (b) The Myristica fragrans tree gives us nutmeg (seed) and mace
(aril, or seed cover).
Green Revolution
The aim of agriculture has always been
improve productivity, or crop yield. In the
twentieth century, productivity increased
tremendously due to the adoption of certain
practices recommended by scientists and
referred to as modern agricultural practices.
As a result, food production increased
significantly. This came to be known as
the Green Revolution. It reached India in
the 1960s, and was especially successful in
the Punjab-Haryana-Uttar Pradesh region.
It changed India from a country with
insufficient food to one of the largest food
producers in the world. The following are
some of the modern practices that have been
adopted.
Cultivation of improved varieties of crops
raised by
Improved varieties are
crossbreeding two varieties, each of which
has certain desirable qualities. For example,
one variety may produce more grain but
be susceptible to diseases, and another
variety may be poor in grain production but
resistant to diseases. By crossbreeding the
two varieties under controlled conditions, a
hybrid variety that produces more grain and
is disease-resistant can be developed. Hybrid
varieties are also known as high-yielding
varieties (HYV
The technique of crossbreeding two
varieties to produce a new variety with the
desirable features of both the parent varieties
is called hybridisation. This technique has
been used to produce improved varieties of
rice, wheat, pulses and oilseeds.
Crop protection
To protect their crops from disease, farmers
treat the seeds or spray the diseased plants
with antibiotics or fungicides. To get rid of
weeds (unwanted plants), they use chemicals
called weedicides or herbicides, which kill the
weeds but not the crop plants. And they use
other chemicals called pesticides to kill pests
such as insects and rodents.
Improving fertility
Instead of natural manure, farmers use
inorganic chemicals with specifiecompositions
to fertilise the soil. Unlike manure, chemical

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Question Text	(a) Food Production Mock can Fig. 8.5 (a) Saffron comes from the pistils of Crocus sativus flowers. (b) The Myristica fragrans tree gives us nutmeg (seed) and mace (aril, or seed cover). Green Revolution The aim of agriculture has always been improve productivity, or crop yield. In the twentieth century, productivity increased tremendously due to the adoption of certain practices recommended by scientists and referred to as modern agricultural practices. As a result, food production increased significantly. This came to be known as the Green Revolution. It reached India in the 1960s, and was especially successful in the Punjab-Haryana-Uttar Pradesh region. It changed India from a country with insufficient food to one of the largest food producers in the world. The following are some of the modern practices that have been adopted. Cultivation of improved varieties of crops raised by Improved varieties are crossbreeding two varieties, each of which has certain desirable qualities. For example, one variety may produce more grain but be susceptible to diseases, and another variety may be poor in grain production but resistant to diseases. By crossbreeding the two varieties under controlled conditions, a hybrid variety that produces more grain and is disease-resistant can be developed. Hybrid varieties are also known as high-yielding varieties (HYV The technique of crossbreeding two varieties to produce a new variety with the desirable features of both the parent varieties is called hybridisation. This technique has been used to produce improved varieties of rice, wheat, pulses and oilseeds. Crop protection To protect their crops from disease, farmers treat the seeds or spray the diseased plants with antibiotics or fungicides. To get rid of weeds (unwanted plants), they use chemicals called weedicides or herbicides, which kill the weeds but not the crop plants. And they use other chemicals called pesticides to kill pests such as insects and rodents. Improving fertility Instead of natural manure, farmers use inorganic chemicals with specifiecompositions to fertilise the soil. Unlike manure, chemical
Updated On	Jan 23, 2023
Topic	Biology
Subject	Science
Class	Class 9
Answer Type	Video solution: 1
Upvotes	97
Avg. Video Duration	7 min

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