Download App

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

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants3 Marks
Question
Answer the following questions:
Describe the endosperm development in coconut.
✓

Answer

The primary endosperm nucleus (PEN) undergoes successive nuclear divisions to give rise to free nuclei. Subsequently, cell wall is formed towards the periphery and endosperm becomes cellular, leaving free nuclear endosperm in the central part. This division is followed by cytokinesis and thus endosperm becomes cellular and is called cellular endosperm.

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 "3 Marks Question" 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

How does industrial melanism support Darwin’s theory of Natural Selection? Explain.
→
How do organisms like fungi, zooplanktons and bears overcome the temporary short-lived climatic stressful conditions? Explain.
→
Answer the following questions:
Explain female heterogamety with the help of an example.
→
What could be the reason for the faster rate of decomposition in the tropics ?
→
Define the term addiction. Name some drugs which are normally used as medicines but are often abused.
→
  1. Write the palindromic nucleotide sequence for the following DNA segment:

5' - GAATTC - 3'

  1. Name the restriction endonuclease that recognises this sequence.
  2. How are 'sticky ends' produced? Mention their role.
→
Explain the process of artificial hybridisation to get improved crop variety in:
  1. Plants bearing bisexual flowers.
  2. Female parent producing unisexual flowers.
→
Describe the different classes of consumers.
→
Explain the role of alkaline phosphatase in recombinant DNA technology. What is the source of this enzyme?
→
  1. You are given tall pea plants with yellow seeds whose genotypes are unknown. How would you find the genotype of these plants? Explain with the help of cross.
  2. Identify a, b and c in the table given below:
S. No.
Pattern of inheritance
Monohybrid F1 phenotypic expression
i.
Co-dominance
a
ii.
b
The progeny resembled only one of the parents
iii.
Incomplete dominance
c
→