Question

In Chlorophyceae, sexual reproduction occurs by______.

Answer 1

Chlorophyceae:

1. It is a class of organisms that are algae.
2. They are largely found in freshwater.
3. They are autotrophic and thalloid organisms.
4. They are photosynthetic as they have green pigments chlorophyll a and chlorophyll b in different chloroplasts.
5. They can be found in soils, moist stones, wood, soils, etc.
6. They can be also found associated with fungi and animals.
7. They can be unicellular, colonial, or filamentous.
8. There are different types of algae-based pigments such as Chlorophyceae, Phaeophyceae (brown algae), and Rhodophyceae (red algae) based on pigments.

Sexual reproduction in Chlorophyceae:

1. Isogamy:
   1. it is the fusion of similar gametes.
   2. Isogamic gametes are gametes that are similar in size.
   3. Due to similarity in size these gametes cannot be differentiated into male and female gametes.
   4. Eg, spirogyra, etc.
2. Anisogamy:
   1. The gametes are dissimilar in size.
   2. The fusion of dissimilar in size and morphology leads to anisogamy.
   3. Eg, Chlamydomonas, etc.
3. Oogamy:
   1. It is the fusion of smaller male gamete and larger female gamete.
   2. The gametes are dissimilar in size.
   3. It is a type of anisogamy.
   4. Eg, bryophytes, ferns, etc.

Final answer: In Chlorophyceae, sexual reproduction occurs by isogamy, anisogamy, or oogamy.