Question

Q4. Give reasons for the following:
a) Stale bread with brownish cottony spots must be discarded immediately.
b) Amoeba and Paramoecium are closely related whereas Bacteria and Amoeba are no​

Answer 1

Answer:

this is ur 1st answer☝️☝️☝️☝️☝️☝️

Explanation:

ur 2nd answer = Organisms that are single-celled, swim in the water and consume food are generally called protozoa. They belong to the kingdom Protista and are classified into different phyla based on how they move. The amoeba, which belongs to the phylum Sarcodina. This single-celled protist can be any shape it wants because its membrane is flexible and it can push its cytoplasm around to change its shape. The word amoeba means to change. Paramecium moves using tiny hair-like structures on its surface called cilia. The paramecium belongs to a whole group of protists that move using cilia, the phylum Ciliophora.

hope ur help this answer ☺️☺️