Reproduction in Plants

Reproduction in Plants

Multiple Choice

Unisexual Flower

• self pollination

• cross pollination

Multiple Choice

bisexual flower

• self pollination

• cross pollination

Multiple Choice

Bisexual flower with anther and stigma maturing at different times

• self pollination

• cross pollination

Multiple Choice

Bisexual flower with anther positioned above the stigma

• self pollination

• cross pollination

Multiple Choice

Bisexual flower with anther positioned below the stigma

• self pollination

• cross pollination

Open Ended

1. Is self pollination a type of sexual reproduction or asexual reproduction? Give reasons for your answer.

Open Ended

2. How are the offspring of a self-pollinated flower different from the offspring of a cross-pollinated flower?

Categorise the following in quick check 3

• Only one plant is required

• Does not depend on external agents such as wind and animals

• Relies on effective cross-pollination strategies to ensure pollen is transferred to a different plant of the same species

• Offsprings can obtain favourable traits from both parents

• Allows a particular species to colonies the area

• Two plants required

• Helps keep favourable traits in the species

Categorise the following in quick check 3

• More energy and pollen wasted

• Less pollen and energy wasted

• Due to changing environment, favourable traits may not be able to adapt in the future

• Produces offsprings that are genetically similar, therefore loss of genetic variation

• Increases genetic variation so that there are higher changes of survival of the species in changing environment

• Can destroy well-adapted traits so offsprings may not be viable

Multiple Choice

1. Which letter shows self-pollination?

• A

• B

• C

• D

Multiple Choice

2. Which letter shows cross-pollination?

• A

• B

• C

• D

Open Ended

Suggest 2 ways the plant may prevent self-pollination

Quick Check 5