Free Mineral Nutrition (Daily Quiz: 12) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

The sequential stage for principal stages of nodule formation are

1. Rhizobia multiply and colonies the surrounding roots.
2. Rhizobia attached to epidermal and root hair cells.
3. Root hair curl and bacteria invades root hair.
4. Initiation of nodule formation in cortex.
5. Infection thread is produced carrying bacteria to cortex.
6. Bacteria released from thread into cells and causes their differentiation in specialized nitrogen fixing cells.
7. Nodule formed is establish, a direct vascular connection with the host for exchange of nutrient.

(a) II → III → IV → I → VII → V → VI

(b) I → VII → II → VI → III → V → IV

(c) VII → VI → IV → I → III → V → II

(d) I → II → III → V → IV → VI → VII

Question-2

Nitrifying bacteria are

(a) Chemoautotroph

(b) Photoautotroph

(c) Heterotrophy

(d) All of these

Question-3

Nif genes occur in

(a) Aspergillus

(b) Penicillium

(c) Rhizobium

(d) Streptococcus

Question-4

Assertion:
Biological nitrogen fixation is a very high energy input process.
Reason:
One molecule of ammonia formation requires 8 ATP during biological nitrogen fixation.

(a) If both the assertion and reason are true but the reason is not a correct explanation of the assertion.

(b) If both the assertion and the reason are true and the reason is a correct explanation of the assertion.

(c) If the assertion is true but the reason is false.

(d) If both the assertion and reason are false.

Question-5

Which of the following is not involved in the phenomenon called ion exchange ?

(a) pH

(b) Cations like $K^+ , Mg^{2+}$, and $Ca^{2+}$

(c) Negatively charged clay particles

(d) H2 S