Question

Consider the following statements each with two blanks.

(i) Annelids have (1) and insects have (2) for excretion.
(ii) Blood enters the glomerulus via (3) arteriole and leaves via (4) arteriole.
(iii) During micturition, the urinary bladder (5) and urethral sphincters (6).
Which one of the following options correctly fills the blanks in any two of the above statements?

• A. $\left(1\right)$-Malphigian tubules, $\left(2\right)$-Flame cells, $\left(5\right)$- Contracts, $\left(6\right)$- Relax
• B. $\left(3\right)$-Afferent, $\left(4\right)$-Efferent, $\left(5\right)$- Contracts, $\left(6\right)$- Relax
• C. $\left(1\right)$- Nephridia, $\left(2\right)$-Malpighian tubules, $\left(5\right)$- Relaxes, $\left(6\right)$- Contract
• D. $\left(3\right)$- Efferent, $\left(4\right)$-Afferent, $\left(5\right)$- Relaxes, $\left(6\right)$- Contract

Answer 1

The correct option is B $\left(3\right)$-Afferent, $\left(4\right)$-Efferent, $\left(5\right)$- Contracts, $\left(6\right)$- Relax

1. Annelids have nephridia and insects have malphaghian tubules for excretion.
2. Blood enters the glomerulus via afferent arteriole and leaves via efferent arteriole.
3. During micturition, the urinary bladder contract and urethral sphincters relax to let the urine pass out from the body.

So, the correct answer is (B);