Chapter 10 Class 6 - Living Creatures: Exploring their Characteristics

(Page 203) List the similarities and differences in life cycles of plants and animals.Similarities:
Both grow in stages.
Both reproduce to continue their kind.
Both eventually die.
Difference:
Feature Plants Animals Start of Life Cycle Seed Egg Stages
Seed → Seedling → Plant
Flower → Fruit → Seed Egg →
Young → Adult (varies)

(Page 203 & 204) Study the data and try to find out examples appropriate for the conditions given in the second and third columns. If you think that an example for any of the conditions given below is not possible, explain why.S. no. Does it grow?
Ooes it respire? Example Remarks 1. No No Stone
Non - Living Thing 2. No Yes
Adult Adting that respiris living, and ling things grow 3. Yes No
Not Possible
Growth needs respiration 4. Yes Yes Plants
Living Thing

(Page 204) You have learnt that different conditions are required for seed germination. How can we use this knowledge for proper storage of grains and pulses?We have learnt that Seeds need water, air, and Sunlight
to germinate.
So, for proper storage of grains and pulses,
We do not want seeds to germinate So these conditions are avoided by
drying the grains,(Prevent Water)
storing them in airtight containers(Prevent Air)
and keeping them in cool and dry places.(No Sunlight)
Detailed AnswerKeep grains dry

(Page 204) You have learnt that a tail is present in a tadpole but it disappears as it grows into a frog. What is the advantage of having a tail in the tadpole stage?Tadpole with Tail
The tail in the tadpole stage helps the tadpole to swim easily in water to find food and escape from enemies.
As the frog grows and develops legs, it no longer needs the tail, so the tail disappears.

(Page 204) Charan says that a wooden log is non-living as it cannot move. Charu counters it by saying that it is living because it is made of wood obtained from trees. Give your arguments in favour or against the two statements given by Charan and Charu. Wood

(Page 204) What are the similarities and distinguishing features in the life cycles of a mosquito and a frog?Similarities
Both start their life from eggs laid in water.
Both undergo multiple stages of development before becoming adults.
In both, young forms (larva/tadpole) live in water.
Both finally develop into adult forms capable of reproduction.

(Page 204) A plant is provided with all the conditions suitable for its growth (Fig. 10.9). Draw what you expect to see in the shoot and the root of the plant after one week. Write down the reasons.Expected Observation after One Week:
The roots will bend and grow downward into the soil
The shoots will bend and grow upward above the ground
Why does this happen?
This happens because shoots of plants grow upward and exhibit movement towards sunlight but roots of plants grow downwards.

(Page 204) Tara and Vijay set up the experiment shown in the picture (Fig. 10.10).What do you think they want to find out?
Here, Tara and Vijay are trying to study the direction of growth of roots and shoots
How will they know if they are correct?
Setup 1
seed placed sideways
Root starts growing sideways but then bends downward
Shoot bends upward
Setup 2
seed upside down
Root changes direction and grows downward
Shoot changes direction and grows upward
Setup 3
normal position
Root grows downward
Shoot grows upward

(Page 204) Design an experiment to check if temperature has an effect on seed germination.Setup:-
Take 3 sets of seeds (same type):
Keep one in cold place (fridge or cool room)
Keep one at room temperature
Keep one in a warm place (near sunlight or heater)
Keep water and air same for all.
Summary - Seeds germinate best at an optimum temperature.
Condition Observation Cold Very Slow or no germination Room Temperature Best Germination Hot Poor or no germination