Response to Stimulus

Q. What is acclimatisation? How is adaptation of different from acclimatisation?

Q.

Match the following characteristics of living organisms with the details.
$\begin{array}{cc}\text{Characteristic}& \text{Details}\\ 1.\text{Response to stimuli}& a)\text{Giving rise to another organism of the same kind}\\ 2.\text{Reproduction}& b)\text{Reaction to sensations like touch, light, heat, cold and sound}\\ 3.\text{Adaptation}& c)\text{The event at which an organism ceases to live}\\ 4.\text{Death}& d)\text{Ability of an organism to adjust to the current environment}\end{array}$

1. 1 - a, 2 - b, 3 - d, 4 - c

2. 1 - b, 2 - a, 3 - c, 4 - d

3. 1 - b, 2 - a, 3 - d, 4 - c

4. None of these

Q. The Class teacher got a few flash cards with some things written on them. She called Reshma and explained the rules.
Reshma had to pick 4 cards and provide a related word or explaination to it.
She picked 4 cards and gave 4 answers.
Each card has 1 point associated with it.
Finally she got 3 points.
Identify, where did she lose the point?

1. Phototropism - Light
2. Thigmotropism - Gravity
3. Hydrotropism - Water
4. Chemotropism - Chemicals

Q. The tactile hairs in the rats are known as

1. Nictating membrane
2. Vibrissae
3. Tarsus
4. None of the above

Q.

The movement of stem against the gravity is called _______.

1. positive geotropism

2. positive phototropism

3. negative phototropism

4. negative geotropism

Q. The root of the plant is _________
i) positively phototropic but-negatively geotropic
ii) positively geotropic but negatively phototropic
iii) negatively phototropic but positively hydrotropic
iv) negatively hydrotropic but.positively phototropic

[Review question: Pg. No: 230]