What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?
- 16
- 24
- 32
- 8
The Correct Option is B
Solution and Explanation
Synergids are characterized by their haploid nature, with a chromosome number represented as n = 8.
Conversely, the aleurone layer exhibits a triploid nature, resulting in the aleurone layer containing '3n' chromosomes.
In this case, '3n' equals '3 x 8,' which means that there are 24 chromosomes present in the aleurone layer.
So, the correct option is (B): 24
Top Questions on sexual reproduction in flowering plants
- How is triple fusion achieved in these plants ?
- CBSE CLASS XII - 2025
- Biology
- sexual reproduction in flowering plants
- Explain the structure of a mature embryo sac of a typical flowering plant.
- CBSE CLASS XII - 2025
- Biology
- sexual reproduction in flowering plants
- Alien species are highly invasive and are a threat to indigenous species. Substantiate this statement with the help of any two examples.
- CBSE CLASS XII - 2025
- Biology
- sexual reproduction in flowering plants
- Assertion (A): In some species of asteraceae and grasses, seeds are formed without fertilization.
Reason (R): Formation of fruit without fertilization is called parthenocarpy.- CBSE CLASS XII - 2025
- Biology
- sexual reproduction in flowering plants
- Select the statements that are true for the embryo of the flowering plants from the given options:
1. The zygote forms a proembryo and subsequently heart-shaped, globular and mature embryo.
2. Most zygotes divide to form embryo only after a certain amount of endosperm is formed.
3. The embryo develops at the micropylar end of the embryo sac.
4. A typical dicotyledonous embryo consists of an embryonal axis and a scutellum.
Choose the correct option from the following:- CBSE CLASS XII - 2025
- Biology
- sexual reproduction in flowering plants
Questions Asked in NEET exam
- Given below are two statements:
Statement I: Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it.
Statement II: Fig wasp and fig tree exhibit a mutual relationship as the fig wasp completes its life cycle in the fig fruit and the fig fruit gets pollinated by the fig wasp. - A wire of resistance \(R\) is cut into 8 equal pieces. From these pieces, two equivalent resistances are made by adding four of these together in parallel. Then these two are added in series. The net effective resistance of the combination is:
- NEET (UG) - 2025
- Resistance
- With the help of the given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in the F3 generation.
- NEET (UG) - 2025
- Genetics
- The plates of a parallel plate capacitor are separated by d. Two slabs of different dielectric constant \(K_1\) and \(K_2\) with thickness \(d/2\) and \(d/2\) respectively are inserted in the capacitor. Due to this, the capacitance becomes two times larger than when there is nothing between the plates. If \(K_1 = 1.25 K_2\), the value of \(K_2\) is :
- NEET (UG) - 2025
- Capacitors and Capacitance
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
- Moment Of Inertia
Concepts Used:
Sexual Reproduction in Flowering Plants
Sexual reproduction in flowering plants takes place or happens when the production of a new organism occurs from two parents by making use of their gametes or sex cells. Both sexual and asexual reproduction can be found in plants. Nearly all flowering plants reproduce sexually. Flowers play a captious role in the process as it carries both the male and female reproductive parts commonly known as androecium and gynoecium respectively.
An individual flower comprises the following parts -
- Pedicle
- Calyx
- Petals
- Sepals
- Stamen
- Pistil
- Receptacle