[Solved] Which of the following pair is correct? I. Amoeba – P
I. Amoeba – Protozoa
II. Bread Mold – Fungus
​Amoeba is the microscopic unicellular protozoans of the Rhizopodan order Amoebida.
The well-known type species, Amoeba proteus, is found on decaying bottom vegetation of freshwater streams and ponds.
Amoebas are used extensively in cell research for determining the relative functions and interactions of the nucleus and the cytoplasm.
Amoeba depends on the simple diffusion of gases for breathing.
The diffusion of gases takes place through the thin cell membrane of the amoeba.
In simple language, the exchange of gases in the amoeba takes place through its cell membrane.
Amoeba lives in water, this water has oxygen gas dissolved in it.
The oxygen from water diffuses into the body of the Amoeba through its cell membrane.
Since the amoeba is very small in size, so the oxygen spreads quickly into the whole body of the amoeba.
This oxygen is used for respiration inside the Amoeba cell.
The process of respiration produces carbon dioxide gas continuously.
In addition to the amoeba, other simple animals like Paramecium and Planaria also depend on the simple diffusion of gases for breathing and respiration.
Bread Mold:
Fungi are primitive Eukaryotic organisms belonging to Kingdom Fungi showing extracellular digestion.
These are found in humid & warm places.
Bread Mold is a Saprophytic Fungi.
Fungi can be unicellular or multicellular organisms having a simple body (Example - Mucor)
Fungi reproduce sexually as well as asexually. Asexual reproduction takes place by Fragmentation, fission & budding.
Some fungi are symbiotic; they live in association either with Lichens or as Mycorrhiza in root cells of plants.
They show the saprophytic mode of nutrition that is, Fungi grow on dead & decaying substances.
During the saprophytic mode of nutrition, fungi use enzymes present in the body of dead & decaying substances and convert them to their simpler forms outside their body.
These simple nutrients are then taken up by Fungal cells for their life processes.
Saprophytic fungi are also called natural cleaners because they degrade and decompose all the biological waste formed (dead animals and plants) making our planet healthier, more beautiful and a better place to live.
The image shows a saprophytic fungi bread mold growing on a slice of bread.