BBYCT-135 · June 2023 · English
IGNOU BBYCT-135 June 2023 Previous Year Question Paper
Plant Anatomy And Embryology
Structured previous year question paper for BBYCT-135, June 2023 session.
Max marks: 50 · Questions: 10
Verified: 29 Jul 2026
BACHELOR OF SCIENCE (GENERAL)
(BSCG)
Term-End Examination
June, 2023
BBYCT-135 : PLANT ANATOMY AND
EMBRYOLOGY
Time : 2 Hours Maximum Marks : 50
Note : Q. No. 1 is compulsory. Attempt any four
questions from Question Nos. 2 to 8.
Draw well labelled diagrams, wherever
necessary.
Q1.(a) Fill in the blanks : 1×5=5
(i) The meristem is arranged parallel to the sides of an organ.
(ii) Stomata include a pore called stoma surrounded by specialised cell
(iii) When stamens are fused to form one group, the condition is
(iv) Suspensor is an ephemeral structure developed at the end of the embryo.
(v) When a petiole is present, the leaf is
(b) Define the following terms : 1×5=5
(i) Extraxylary fibers
(ii) Tunica
(iii) Dendrochronology
(iv) Monoecious
(v) Eugamy
Q2.(a) Explain the internal structure of a dorsiventral leaf. 5
(b) Differentiate between interfascicular and intrafascicular vascular cambium.
Q3.List various types of trichomes ? Explain their functions.
Q4.Name the different wall layers of a pollen grain.
Q5.Explain their development.
Q6.Write a note on the nature of endosperm.
Q7.Describe the different types of endosperm.
Q8.Describe with suitable diagrams the various stages of a dicotyldonous embryo. 10 [ 3 ]
Q9.Differentiate between any two of the following :
(i) Parenchyma and Collenchyma
(ii) Secondary xylem and Secondary phloem
(iii) Androecium and Gynoecium
Q10.Write short notes on any four of the following : 2×4=10
(i) Parthenocarphy
(ii) Periderm
(iii) Apomixis
(iv) Apical meristems
(v) Microsporogenesis 2023 -135 1×5=5 224 =10 BBYCT–135 6,0
(10)