HARD
Earn 100
The erect ovule devoid of any curvature is called the amphitropous ovule.
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Important Questions on Sexual Reproduction in Flowering Plants
HARD
Draw a labelled diagram of the mature embryo sac of angiosperms.
EASY
The ovule of an angiosperm is technically equivalent to
MEDIUM
Differentiate between microsporogenesis and megasporogenesis.
EASY
_____ is the region on which, the ovule is connected to funicle.
MEDIUM
Describe the structure of the anatropous ovule with a diagram.
EASY
Draw a well-labelled diagram of an angiospermic ovule showing porogamous type of pollen germination.
HARD
Describe the structure of ovule in plants.
EASY
Match column-I with column-II and select the correct option.
| Column-I | Column-II | ||
| a) | Megasporangium | i) | Accessory cells |
| b) | Inner integument | ii) | Embryo sac |
| c) | Antipodal | iii) | Ovule |
| d) | Female gametophyte | iv) | Tegmen |
MEDIUM
In ovules, a single megaspore mother cell
(a) Is generally differentiated in the micropylar region
(b) Is derived from integument
(c) Contains dense cytoplasm and prominent nucleus
EASY
Collar like outgrowth arising from the base of ovule and forming a sort of third integument is known as
EASY
A typical angiospermous ovule is attached to the placenta by means of a stalk called X. Body of the ovule fuses with X in the region called Y. Identify X and Y.
| X | y | |
|---|---|---|
| (i) | Funicle | Hilum |
| (ii) | Hilum | Funicle |
| (iii) | Funicle | Micropyle |
| (iv) | Hilum | Chalaza |
MEDIUM
Match the columns, and select the correct option.
| Column – I | Column – II |
| (a) Hilum | (i) Parenchymatous tissue |
| (b) Micropyle | (ii) Female gametophyte |
| (c) Embryo sac | (iii) Junction between ovules and funicles |
| (d) Nucellus | (iv) Small opening present at the tip of the ovule |
EASY
Generally number of integuments in the ovule of angiosperms and gymnosperms is
MEDIUM
Starting from the innermost part, the correct sequence of parts in an ovule are
MEDIUM
With a neat, labelled diagram, describe the parts of a typical angiosperm ovule?
MEDIUM
Study the following table and choose the correct option.
| Column-I | Column- II | ||
|---|---|---|---|
| (A) | Funiculus | (1) | Hilum |
| (B) | Scar of ovule | (2) | Tegmen |
| (C) | Zygote | (3) | Testa |
| (D) | Inner integument | (4) | Stalk of seed |
| (5) | Embryo |
MEDIUM
Match Column I with Column II and select the correct option from the given codes.
| Column I | Column II | ||
|---|---|---|---|
| Funicle | Mass of parenchymatous cells | ||
| Hilum | Basal part of ovule | ||
| Integument | one of two protective layers of ovule | ||
| Chalaza | Region where body of ovule fuses with funicle | ||
| Nucellus | Stalk of ovule |
MEDIUM
The ovule that turns at more than 360° angle, so that funicle becomes coiled around the ovule, is found in
EASY
Embryo sac is to ovule as ........... is to an anther.
MEDIUM
Ovule with funiculus lying close to micropyle is known as
