Question

Use the correct option in each of the following.

1. Penicillin is obtained from a
(a) protozoan
2. Lower plants and plantlike organisms reproduce by producing
(b) bacterium
(c) mould
(d) mushroom
membrane. This is called
ke organisms reproduce by producing a single cell encased in a tough
fa) spore
3. Algin is derived from
(b) sporangium
(c) mycelium
(d) seed
(a) bacteria
4. Seabeds have large deposits of silica derived from
(b) algae
(c) fungi
(d) protozoans
(a) snails
(b) protozoans
(c) bacteria
(d) diatoms
5. Microorganisms living in the roots of peas orams, and so on, can convert nitrogen of the air to
nitrates. These are
(a) bacteria
(b) protozoans
(c) diatoms
(d) viruses

Answer 1

Answer:

make ur ques clear first

Answer 2

Explanation:

1. Penicillin is obtained from Penicillium fungi.
2. Lower plants and plantlike organisms reproduce by producing bacteria. The bacterium is the plural form of the bacteria.
3. Algin is derived from algae. So here the answer is Sporangium. Some of the unicellular algae transformed to form sporangium.
4. Seabeds have large deposits of silica derived from diatoms.
5. The answer is bacteria. There are some bacteria which fixes nitrogen in the soil and it helps in the nutrients for the plant.