What is the function of the macronucleus?
A macronucleus (formerly also meganucleus) is the larger type of nucleus in ciliates. Macronuclei are polyploid and undergo direct division without mitosis. It controls the non-reproductive cell functions, such as metabolism.
What does the lysosome do in a paramecium?
Food vacuoles encapsulate food consumed by the paramecium. They then fuse with organelles called lysosomes, whose enzymes break apart food molecules and conduct a form of digestion.
What is the function of micronuclei?
The micronucleus serves as the germ line nucleus but does not express its genes. The macronucleus provides the nuclear RNA for vegetative growth. Mating cells exchange haploid micronuclei, and a new macronucleus develops from a new diploid micronucleus. The old macronucleus is destroyed.
What are the functions of Paramecium?
Paramecia feed on microorganisms like bacteria, algae, and yeasts. To gather food, the Paramecium makes movements with cilia to sweep prey organisms, along with some water, through the oral groove (vestibulum, or vestibule), and into the cell.
What is the purpose of conjugation in Paramecium?
In Paramecium, Conjugation is a form of sexual reproduction. It is a temporary union of two individuals of same species for mutual exchange of genetic materials. Continuous multiplication by binary fission is interrupted by conjugation as it is necessary for the survival and rejuvenation of the race.
What is the function of macronucleus in Ciliophora?
The macronuclei of Ciliophora contain numerous endocytobionts. Ciliophora are multinucleate organisms. The macronucleus controls cell functions and asexual reproduction. The micronucleus is also involved with sexual reproduction.
What is the function of the Trichocyst in Paramecium?
After a series of experiments, it was concluded that the function of trichocyst in Paramecium is mainly of a defensive nature. The trichocysts defend Paramecium against D. margaritifer. Thus, trichocysts in Paramecium serve as defensive organelles against several predators.
What is the function of Trichocyst in Paramecium?
What is the function of macronucleus in Paramecium Caudatum?
Macro Nucleus: Macronucleus is kidney like or ellipsoidal in shape. It’s densely packed within the DNA (chromatin granules). The macronucleus controls all the vegetative functions of paramecium hence called the vegetative nucleus.