Class 7 Exam  >  Class 7 Videos  >  Science Class 7  >  Self and Cross Pollination

Self and Cross Pollination Video Lecture | Science Class 7

111 videos|246 docs|28 tests

Top Courses for Class 7

FAQs on Self and Cross Pollination Video Lecture - Science Class 7

1. What is self-pollination and how does it occur?
Ans. Self-pollination is the process where pollen from the same flower or plant fertilizes its own ovules. This can occur in plants that have both male and female reproductive structures, allowing for the transfer of pollen within the same flower or between flowers on the same plant.
2. What is cross-pollination and why is it important?
Ans. Cross-pollination is the transfer of pollen from the male anthers of one flower to the female stigma of another flower, usually of a different plant. It is important because it promotes genetic diversity, which can lead to stronger plants and better adaptation to environmental changes.
3. What are the advantages of self-pollination?
Ans. The advantages of self-pollination include the assurance of seed production even in the absence of pollinators, the ability to maintain desirable traits within a plant, and the efficiency in stable environments where conditions do not favor cross-pollination.
4. What are the disadvantages of cross-pollination?
Ans. The disadvantages of cross-pollination include the reliance on external pollinators, which may not always be available, and the potential for hybridization that could lead to unpredictable traits in offspring. Additionally, it can be less efficient than self-pollination in some stable environments.
5. How can gardeners encourage cross-pollination in their plants?
Ans. Gardeners can encourage cross-pollination by planting a diverse range of compatible plant species together, ensuring that they bloom at the same time. They can also attract pollinators by planting flowers that are appealing to bees and other insects, and by minimizing the use of pesticides that could harm these beneficial organisms.
111 videos|246 docs|28 tests
Explore Courses for Class 7 exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

Semester Notes

,

Summary

,

Extra Questions

,

past year papers

,

practice quizzes

,

Objective type Questions

,

study material

,

Self and Cross Pollination Video Lecture | Science Class 7

,

Viva Questions

,

Self and Cross Pollination Video Lecture | Science Class 7

,

MCQs

,

Sample Paper

,

video lectures

,

shortcuts and tricks

,

Important questions

,

ppt

,

Free

,

Previous Year Questions with Solutions

,

pdf

,

mock tests for examination

,

Exam

,

Self and Cross Pollination Video Lecture | Science Class 7

;