Other Forms of Excretion

Q. Match the following organs/components with the elements which they help in excreting:

1. Nitrogenous wastes
2. NaCl and Lactic acid
3. Hydrocarbons
4. Carbon dioxide

Q.

Match the following organs/components with the elements which they help in excreting:
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{i. Lungs}& \text{a. Low amount of nitrogenous waste}\\ \text{ii. Sebaceous secretion}& \text{b. Sodium chloride and lactic acid}\\ \text{iii. Sweat}& \text{c. Hydrocarbons, sterols and waxes}\\ \text{iv. Saliva}& \text{d. Carbon dioxide}\end{array}$

1. i $\Rightarrow$ a, ii $\Rightarrow$ c, iii $\Rightarrow$ b, iv $\Rightarrow$ d

2. i $\Rightarrow$ d, ii $\Rightarrow$ c, iii $\Rightarrow$ b, iv $\Rightarrow$ a

3. i $\Rightarrow$ b, ii $\Rightarrow$ c, iii $\Rightarrow$ d, iv $\Rightarrow$ a

4. i $\Rightarrow$ a, ii $\Rightarrow$ d, iii $\Rightarrow$ b, iv $\Rightarrow$ c

Q.

Which of the following is a method by which plants excrete wastes?

1. Transpiration

2. Lost as leaves

3. Photosynthesis

4. All of the above

Q. If a food particle is placed near the osculum of a sponge then it will

1. Be thrown away
2. Be ingested
3. Rotate round osculum
4. Be ingested first and then thrown out through ostia