Answer
418.2k+ views
Hint: Reproduction in the bryophytes occurs either through vegetative propagation or through sexual reproduction. As A Sexually they reproduce using gemma, tubers, bulbils, regeneration and through many more ways. The male and female sex organs are known as antheridia and archegonia.
Complete answer:
- ‘A’ in the given diagram is the androcytes where pollen grains are formed. The wall covering it provides protection to the androcytes. It is the main centre for the production of male gametophytes.
- ‘B’ in the given diagram is the antheridial cavity that encloses the androcyte.
- ‘C’ in the given diagram is the stalk that holds the antheridium in place.
- ‘D’ in the given diagram is the neck canal cell of the archegonia.
- ‘E’ is the ventral canal cell.
- ‘F’ is the egg of the archegonia.
Additional information: The sex organs present in bryophytes are well covered and multi-layered. Antheridium is a stalked structure that encloses androcytes. Androcytes give rise to the biflagellate antherozoid. Archegonium is a stalked and flask-shaped female sex organ that consists of neck canal cells and ventral canal cells. It has a swollen base structure called a venter. Antherozoids are attracted to the archegonia because of chemical substances released by neck canal cells and ventral canal cells. The fertilized egg marks the beginning of the sporophyte stage. The zygote undergoes repeated division to form a zygote. The embryo develops into the sporophyte. The sporophyte remains attached to the parent plant body for nutrition. The sporophyte is differentiated into foot, capsule, and seta. Capsule functions to produce spores by the division of spore mother cells. They further divide to form a tetrad of spores.
So the answer is ‘b) iii and iv’
Note: In the female sex organ the neck-like elongated structure consists of the neck canal cells and at the end is the small portion of ventral canal cells. The female produces a single egg whereas the male produces a large number of spores.
Complete answer:
- ‘A’ in the given diagram is the androcytes where pollen grains are formed. The wall covering it provides protection to the androcytes. It is the main centre for the production of male gametophytes.
- ‘B’ in the given diagram is the antheridial cavity that encloses the androcyte.
- ‘C’ in the given diagram is the stalk that holds the antheridium in place.
- ‘D’ in the given diagram is the neck canal cell of the archegonia.
- ‘E’ is the ventral canal cell.
- ‘F’ is the egg of the archegonia.
Additional information: The sex organs present in bryophytes are well covered and multi-layered. Antheridium is a stalked structure that encloses androcytes. Androcytes give rise to the biflagellate antherozoid. Archegonium is a stalked and flask-shaped female sex organ that consists of neck canal cells and ventral canal cells. It has a swollen base structure called a venter. Antherozoids are attracted to the archegonia because of chemical substances released by neck canal cells and ventral canal cells. The fertilized egg marks the beginning of the sporophyte stage. The zygote undergoes repeated division to form a zygote. The embryo develops into the sporophyte. The sporophyte remains attached to the parent plant body for nutrition. The sporophyte is differentiated into foot, capsule, and seta. Capsule functions to produce spores by the division of spore mother cells. They further divide to form a tetrad of spores.
So the answer is ‘b) iii and iv’
Note: In the female sex organ the neck-like elongated structure consists of the neck canal cells and at the end is the small portion of ventral canal cells. The female produces a single egg whereas the male produces a large number of spores.
Recently Updated Pages
Mark and label the given geoinformation on the outline class 11 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
When people say No pun intended what does that mea class 8 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Name the states which share their boundary with Indias class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give an account of the Northern Plains of India class 9 social science CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Change the following sentences into negative and interrogative class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Advantages and disadvantages of science
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Which are the Top 10 Largest Countries of the World?
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Difference Between Plant Cell and Animal Cell
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
10 examples of evaporation in daily life with explanations
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Give 10 examples for herbs , shrubs , climbers , creepers
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
Write a letter to the principal requesting him to grant class 10 english CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)
How do you graph the function fx 4x class 9 maths CBSE
![arrow-right](/cdn/images/seo-templates/arrow-right.png)