Question
Easy
Solving time: 2 mins
Found 5 tutors discussing this question
Discuss this question LIVE
11 mins ago
Text solutionVerified
Immediately after fertilization, the secondary nucleus starts developing into a triploid endosperm while the zygote starts developing into an embryo. The integuments form the seed coat. The zygote divides only when a certain amount of endosperm is formed. This is an adaptation to provide assured nutrition to the developing embryo. The first division of the zygote is transverse and produces hypobasal cell towards micropyle and epibasal cells or embryo cells towards the chalaza,
The hypobasal and the remaining cells constitute the suspensor which pushes the embryo into the endosperm to receive nutrition for the development of the embryo. The first cell of the suspensor towards the micropylar end becomes swollen and functions as a haustorium. The last cell of the suspensor at the end adjoining the embryo is called hypophysis which gives rise to the radicle.
The epibasal cell or embryo cell undergoes two vertical divisions and one transverse division to form eight cells which are arranged in two tiers¬epibasal (terminal) and hypobasal (near the suspensor). The epibasal cell forms the two cotyledons and the plumule. The hypobasal cells produce the hypocotyl except its tip.
Embryo depicts globular, heart-shaped, and ultimately torpedo-shaped structures.
The various stages of development of embryo are depicted in diagrams drawn below:
The hypobasal and the remaining cells constitute the suspensor which pushes the embryo into the endosperm to receive nutrition for the development of the embryo. The first cell of the suspensor towards the micropylar end becomes swollen and functions as a haustorium. The last cell of the suspensor at the end adjoining the embryo is called hypophysis which gives rise to the radicle.
The epibasal cell or embryo cell undergoes two vertical divisions and one transverse division to form eight cells which are arranged in two tiers¬epibasal (terminal) and hypobasal (near the suspensor). The epibasal cell forms the two cotyledons and the plumule. The hypobasal cells produce the hypocotyl except its tip.
Embryo depicts globular, heart-shaped, and ultimately torpedo-shaped structures.
The various stages of development of embryo are depicted in diagrams drawn below:
Was this solution helpful?
109
Share
Report
One destination to cover all your homework and assignment needs
Learn Practice Revision Succeed
Instant 1:1 help, 24x7
60, 000+ Expert tutors
Textbook solutions
Big idea maths, McGraw-Hill Education etc
Essay review
Get expert feedback on your essay
Schedule classes
High dosage tutoring from Dedicated 3 experts
Practice questions from Trueman's Biology for NEET (Truemans)
Question 3
Easy
Views: 5,854
(ii) How do flowers reward their insect pollinators? Explain.
Practice more questions from Sexual Reproduction in Flowering Plants
Question 2
Easy
Views: 5,912
Practice questions on similar concepts asked by Filo students
Question 1
Views: 5,849
Question 2
Views: 5,074
Question 4
Views: 5,597
Reason: The BOD test measures the rate of uptake of oxygen by micro-organisms in a sample of water.a. If both assertion and reason are true and the reason is the correct explanation of the assertion. b. If both assertion and reason are true but reason is not the correct explanation of the assertion. c. If assertion is true but reason is false. d. If both assertion and reason are false.
Stuck on the question or explanation?
Connect with our Biology tutors online and get step by step solution of this question.
231 students are taking LIVE classes
Question Text | |
Topic | Sexual Reproduction in Flowering Plants |
Subject | Biology |
Class | Class 12 |
Answer Type | Text solution:1 |
Upvotes | 109 |