Understanding Seed Structure

What is the outer protective covering of a seed called?

• seed layer

• seed shell

• seed coat

• seed membrane

The part of a seed which will grow into a root is called the:

• plumule

• hypocotyl

• cotyledon

• radicle

What is the function of the cotyledon in a seed

• The cotyledon helps in photosynthesis immediately after germination.

• The cotyledon absorbs water from the soil.

• The cotyledon provides nutrients to the developing seedling.

• The cotyledon protects the seed from pests and diseases.

What is the primary role of the seed coat?

• To aid in seed germination.

• The primary role of the seed coat is to protect the seed.

• To facilitate photosynthesis in the seed.

• To provide nutrients to the seed.

When the the seed absorbs water, which causes the seed coat to swell and soften.

• Imbibition

• Enzyme activation

• Root growth

• Shoot growth

• Leaf growth

The water activates enzymes that start the plant's growth.

• Imbibition

• Root growth

• Enzyme activation

• Shoot growth

• Leaf growth

The seed grows a root to access water underground.

• Root growth

• Shoot growth

• Leaf growth

• Imbibition

• Leaf growth

Why is leaf growth important ?

• To draw in nutrients from the soil

• To activate enzymes that start plant growth

• To soften the seed coat

• To absorb sunlight through chlorophyll to carry out photosynthesis

Why is photosynthesis important

• It so it can make the plant green

• So plants don't die

• So plants can absorb sunlight

• To make oxygen

• So that plants can make their own food to grow, and survive

What happens during enzyme activation ?

• They make the plant grow

• They stop the plant from dying

• They break down stored nutrients into sugars and amino acids which provides nutrients for the seed

• They allow the plant to grow to carry out photosynthesis