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- #Diversity in Living World
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Which one is wrongly matched?
Option: 1
Gemma cups Marchantia
Option: 2
Biflagellate zoospores Brown algae
Option: 3
Uni Flagellated gametes Polysiphonia
Option: 4
Unicellular organism Chlorella
Answers (1)
Rhodophyceae -
- The members of Rhodophyceae are commonly called red algae. Eg. Polysiphonia, Porphyra, Gelidium etc.
- They mostly live in warmer marine waters.
- The thallus is usually multicellular and some even have complex organization.
- Cell wall contains cellulose and pectin along with phycocolloids and carrageenan.
- They have chlorophyll a and d.
- The red colour is due to R-Phycoerythrin.
- It also has a phycocyanin.
- Due to the presence of Phycoerythrin they can grow in deep waters where other algae cannot grow.
- The reserve food is Floridean Starch which is similar to amylopectin and glycogen.
- Vegetative reproduction takes place by fragmentation.
- Asexual reproduction by non-flagellate spores called as archaeospores, neutral spores and mono spores.
- Sexual reproduction takes place by oogamy.
- The female sex organ is carpogonium with a single egg cell and male sex organ spermatangium with non-motile male gametes called as spermatia.
- This algal group shows post fertilisation changes also.
-
Non-motile gametes are formed in rhodophyceae.
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