Download App

Sexual Reproduction In Flowering Plants — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction In Flowering Plants2 Marks
Question
What is self-incompatibility? Why does self- pollination not lead to seed formation in self- incompatible species?
✓

Answer

→ Self-incompatibility refers to a genetically controlled mechanism that prevents self- pollination and promote cross-pollination in flowers.
→ Self-pollination cannot lead to the formation of seeds in a self-incompatible species. This happens because the pollens are unable to fertilize the ovules that would develop into an embryo and hence form seeds.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Sexual Reproduction In Flowering Plants→Sexual Reproduction In Flowering Plants — all question types→BIOLOGY STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

A set of terms are given below (box) followed by few statements in a box.
Outbreeding, Inbreeding, Out-crossing, Cross-breeding, Interspecific hybridisation.
Pick the correct term and write it against the appropriate statement.
  1. Male and female animals of two different related species are mated.
  2. Superior males of one breed are mated with superior females of another breed.
  3. Mating of animals within the same breed, but having no common ancestors on the either side of their pedigree up to 4-6 generations.
  4. Mating of more closely related individuals within the same breed for 4-6 generations.
→
"Migration may enhance or blurr the effects of selection". Comment.
→
List any two economically important products for human obtained from Apis indica.
→
List the events that lead to biogas production from waste water whose BOD has been reduced significantly.
→
Name the plant source of the drug popularly called 'smack'. How does it affect the body of the abuser?
→
Name any two hormones found in the blood of a pregnant female only.
→
Explain the steps that ensure cross pollination in an autogamous flower.
→
Explain the contribution of Thermus aquaticus in the amplification of a gene of interest.
→
The backbone of DNA strands contains atoms joined by covalent bonds, whereas the bases between the two strands are hydrogen bonded. Based upon your knowledge of bonds, what is the significance of the type of bonding existing in a DNA molecule?
→
What would be the molar concentration of human $\text{DNA}$ in a human cell?
→