Question:
Just before fertilization, the angiosperm's embryo sac contains ________ and ________ nuclei.
Just before fertilization, the angiosperm's embryo sac contains ________ and ________ nuclei.
Show Hint
Embryo sac memory:
3 + 2 + 1 = 6 haploid
+ 1 diploid (polar nuclei fused)
+ 1 diploid (polar nuclei fused)
Updated On: May 8, 2026
- six haploid, one diploid
- five haploid, two diploid
- six diploid, one haploid
- seven haploid, one diploid
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Concept: The mature embryo sac (female gametophyte) of angiosperms is typically 8-nucleate and 7-celled.
• 3 antipodal cells (haploid)
• 2 synergids (haploid)
• 1 egg cell (haploid)
• 2 polar nuclei (which fuse to form a diploid secondary nucleus)
Step 1: Count haploid nuclei.
3 (antipodals) + 2 (synergids) + 1 (egg) = 6 haploid nuclei
Step 2: Count diploid nucleus.
The two polar nuclei fuse to form one diploid nucleus.
Step 3: Conclusion.
Thus, embryo sac contains 6 haploid nuclei and 1 diploid nucleus. Final Answer: Option (A)
Was this answer helpful?
0
0
Top MHT CET Biology Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- Important sperm lysin used for dissolving egg covering is
- In biogas plant, the role of acidogenic bacteria is to
- In $C_{3}$ plants, the first stable product of photosynthesis during the dark reaction is
- In case of anaerobic respiration, the RQ is ___________
View More Questions
Top MHT CET Double Fertilisation Questions
- Assertion: Insects are important pollinators for many flowering plants. Reasoning: Insects visit flowers to obtain nectar or pollen, and in the process, they inadvertently transfer pollen from one flower to another, facilitating cross-pollination.
- During double fertilization in angiosperms, which of the following events occurs?
- Which of the following is an example of an outbreeding device in plants?
- Which of the following flowers is most likely to be pollinated by birds?
- Just before fertilization, the angiosperm's embryo sac contains ________ and ________ nuclei.
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions