Description
Bachelor’s Degree Programme (BSCG)
(Plant Anatomy and Embryology)
Valid from 1st January, 2026 to 31st December, 2026
ASSIGNMENT
Course Code: BBYCT-135
Assignment Code: BBYCT-135/TMA/2026
Maximum Marks: 100 Note: Attempt all questions.
The marks for each question are indicated against it.
1.Define the following terms : i) Plastochron ii) Polyspory iii) Tuber iv) Areole v) Tylosis vi) Stomatal complex vii) Commensalism viii) Cleistogamy ix) Cheiropterophily x) Apomeiosis
2.Explain the different theories of root apical organization.
3.a) Describe in brief the various morphological and anatomical adaptations in xerophytes with diagrams.
b) Describe chronologically the events that enable primary dicot root become secondary roots. Support your answer with suitable labeled diagrams.
4.a) How do mangroves remove salt?
b) Trichomes play an important role in defense of plants. Explain the statement
5.a) Three genes regulate the stages of flower development. Explain.
b) How stigma helps in the process of pollen germination and guidance of pollen tube into the style?
6.a) What are endosperm haustoria? Describe the different types of endosperm haustoria.
b) Name some of the important genes and factors regulating the development of embryo in Arabidopsis
7. Write a note on seed development and its structure. (
8.a) What is parthenocarpy? Describe various types of parthenocarpy found in plants
b) Describe the type of pollination noted in Salvia.
9.Differentiate between:
i) Composite and ruminate endosperm
ii) Companion cell and albuminous cell
iii) Vascular and cork cambium
iv) Stomatal frequency and Stomatal index
v) Psychophily and hymenophily
10.Write short notes on:
i) Double fertilization
ii) Pneumatophores
iii) Pollen sterility
iv) Suspensor
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