Seed Science

Unit 1. Seeds and reproduction in crop plants.

Agriculture18 questions3 topics
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About this unit

Seed is the most basic input in farming: good seed alone can raise yields noticeably. This unit covers the structure of monocot and dicot seeds, how crop plants reproduce (sexual and asexual), pollination and fertilisation, and seed dormancy and the classes of seed used in India's seed multiplication chain. It connects directly with plant breeding, seed treatment and sowing practices.

How to prepare

Draw and label a gram (dicot) seed and a maize grain (monocot). Learn the products of double fertilisation and their ploidy. List the devices that promote cross-pollination with crop examples. Memorise the causes of dormancy with matching treatments, and the order nucleus → breeder → foundation → certified seed with tag colours.

Topics in this chapter

Seed structure

Structure of monocot and dicot seeds.

6 questions

Reproduction, pollination and fertilisation

Modes of reproduction in crop plants.

6 questions

Seed dormancy and types of seeds

Causes of dormancy and classes of seed.

6 questions

Practice questions

The single cotyledon of a maize grain is called the:Easy
In a monocot seed, the sheath that protects the plumule is the:Medium
The protein-rich outer layer of the endosperm in cereal grains is the:Medium
The scar on a seed marking where it was attached to the fruit is the:Easy
In which crop do the cotyledons come above the soil during germination?Hard

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