Define micropropagation.

Important Questions on Asexual and Sexual Reproduction in Plants

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 11

Write a note on air layering.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 12

What is self-incompatibility?

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 13

 Explain giving reasons why pollen grains can be best preserved as fossils.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 14

 How many haploid cells are present in a mature female gametophyte of a flowering plant? Name them.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 15

State one difference and one similarity between geitonogamy and xenogamy.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 16

Explain any three devices developed in flowering plants to discourage self-pollination and encourage cross-pollination.  

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 17

 Draw a labelled schematic representation of a mature embryo sac of an organism.

HARD

12th Tamil Nadu Board

IMPORTANT

Botany Crash Course (Based on Revised Syllabus-2023)>Chapter 1 - Asexual and Sexual Reproduction in Plants>Exercise>Q 18

Describe any four devices which have been observed in plants to achieve cross-pollination and discourage self-pollination.