Question

Oil is the reserve food in:
(a)Chlamydomonas (Chlorophyceae)
(b)Vaucheria (Xanthophyceae)
(c)Nostoc (Myxophyceae)
(d)Sargassum (Phaeophyceae)

Answer 1

It is found in stagnant water and on damp soil, in freshwater, and in seawater. It is used in molecular biology as a model organism for the studies of flagellar motility and chloroplast dynamics, genetics, and biogenesis.

Complete answer
Chlamydomonas or Chlorophyceae are a class of green algae. They are usually green due to the dominant presence of pigments chlorophyll a and chlorophyll b. They also reserve food within the sort of oil droplets.

Additional information
-Motile unicellular algae.
-Generally oval.
-The cell wall is made up of a glycoprotein and non-cellulosic polysaccharides instead of cellulose.
-Two anteriorly inserted whiplash flagella. Every flagellum begins from a basal granule inside the front papillate or non-papillate locale of the cytoplasm. Every flagellum shows an average 9+2 plan of the part fibrils.
-Contractile vacuoles are near the bases of flagella.
-A prominent cup or bowl-shaped chloroplast is present. The chloroplast contains groups made out of a variable number of the photosynthetic thylakoids which are not coordinated into grana-like structures.
- The core is encased during a cup-molded chloroplast, which includes a solitary huge pyrenoid where starch is produced using photosynthetic items.
Pyrenoid with starch sheath is present within the posterior end of the chloroplast.
-Eyespot present within the anterior portion of the chloroplast. It comprises 2 or 3, more or less parallels rows of linearly arranged fat droplets. It comprises a few, pretty much equal columns of straightly arranged fat droplets.

So the correct answer is ‘Chlamydomonas (Chlorophyceae)’.

Note: Chlamydomonas is widely distributed in freshwater or damp soil. It is generally found during a habitat rich in ammonium salt. It has red eye spots for photosensitivity and reproduces both agamically and explicitly
Chlamydomonas’ agamogenesis occurs by zoospores, aplanospores, hypnospores, or a palmella stage, while its amphimixis is thru isogamy, anisogamy, or oogamy.