Question

Which of the following is an example of autotrophic grass mushroom amoeba paramecium

Answer 1

$\huge\underline\bold\green{ANSWER}$

Explanation:

amoeba paramecium is the ans

Protista Kingdom, the amoeba, the paramecium

In the six kingdom classification, the Protista Kingdom contains all single celled organisms which are eukaryotic, meaning which have a nucleus. They are called protists.

Amoeba structures include: cell membrane, outer firm but flexible ectoplasm layer, inner fluid cytoplasm, nucleus, and one contractile vacuole for maintaining a homeostasis of water content.

An amoeba has no fixed shape. It moves with a so-called “amoeboid movement”, by forming temporary fluid extensions of cytoplasm called “pseudopodia”, then pulling the rest of the cell along behind it.

Amoebae are protozoa and animal-like, feeding on smaller organisms such as paramecia and bacteria. Their pseudopodia completely encircle the prey, which then form a food vacuole, into which enzymes are secreted and the prey digested.

Reproduction is asexual, first by mitosis, then cytokenesis.

When the environment becomes hostile, an amoeba can enter a dormant state encased within a protective cyst for a long period of time. When conditions become favorable again, it emerges to resume normal activities.

The paramecium, like the amoeba, is a protozoan and animal-like.

It’s structures include: a flexible outer pellicle, a large macronucleus with multiple copies of its DNA, a tiny micronucleus, 2 contractile vacuoles, and for feeding, an oral groove, mouth pore, and gullet.

Paramecia move by synchronizing the stroking of thousands of fine hairs called cilia, which completely cover its body.

They feed on tiny organisms such as yeast cells. Cilia in the oral groove sweep edible particles into the gullet, which when full, closes to form a food vacuole and breaks away. Food particles within the vacuole are digested, the nutrients absorbed, and waste matter passed out through an anal pore.

Reproduction can be asexual by binary fission, or by a type of sexual reproduction called conjugation during which two paramecia connect at their mouth pores and exchange copies of their micronucleus. After conjugation, paramecia are genetically different than they were before.

Survival skills of the paramecium include: a defensive discharge of sticky threads called trychocysts, attraction-avoidance responses to stimuli such as the concentration of dissolved oxygen; and when the environment becomes hostile, entering a dormant state enclosed within a cyst, to emerge only when conditions improve