Following are given four statements (i)- (iv) related to frog. Read the statement carefully and select the option that identifies two correct statements.
(i) The brain in divided into fore-brain, mid-brain and hind-brain
(ii) Vasa efferentia enter the kidneys on their side and open into Bidder's canal
(iii) Ear acts as a hearing organ only
(iv) RBCs are enucleated and contain red coloured pigment namely haemoglobin

Options

A. (ii) and (iii)
B. (i) and (ii)
C. (iii) and (iv)
D. (i) and (iv)

Explanation

To solve the question, we need to evaluate each of the four statements related to frogs and identify which two statements are correct.

1. **Statement (i)**: "The brain is divided into fore-brain, mid-brain, and hind-brain."
- This statement is **correct**. The frog's brain is indeed divided into these three parts, similar to other vertebrates.

2. **Statement (ii)**: "Vasa efferentia enter the kidneys on their side and open into Bidder's canal."
- This statement is also **correct**. In frogs, the vasa efferentia are indeed associated with the kidneys and connect to Bidder's canal.

3. **Statement (iii)**: "Ear acts as a hearing organ only."
- This statement is **incorrect**. While the ear does function in hearing, it also plays a role in balance. Frogs have a tympanum (eardrum) that helps in sound transmission and balance maintenance.

4. **Statement (iv)**: "RBCs are enucleated and contain red coloured pigment namely hemoglobin."
- This statement is **incorrect**. Frog red blood cells (RBCs) are nucleated, which means they contain a nucleus, unlike mammalian RBCs. They do contain hemoglobin, which is the red pigment.

Now, we summarize the correct statements:
- The correct statements are (i) and (ii).

Therefore, the option that identifies the two correct statements is **(i) and (ii)**.