Classification of Living Things activity for Grade 7 - Free Printable

Let’s go through each question one by one.

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Question 1:
The Mimosa plant closes its leaves when touched. This is a reaction to something happening — the touch. That means it’s responding to an external signal or stimulus.

Looking at the options:
- A. Excreting waste? No, that’s about getting rid of toxins.
- B. Growing and developing? Not related to closing leaves quickly.
- C. Respiring all the time? Breathing isn’t shown here.
- D. Responds to stimuli? YES — “stimuli” means things like touch, light, sound, etc. The plant reacted to being touched.

✔ So, correct answer for Question 1: D

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Question 2:
The diagram shows a plant in a box with a hole on Day 1, and after 3 days (Day 4), the plant has grown toward the hole where sunlight comes in.

This shows the plant growing over time — from smaller to bigger, changing shape as it matures.

Options:
- A. Can move? Plants don’t walk around — this is growth, not movement.
- B. Reproduce? No babies or seeds shown.
- C. Grow from young to adult stage? YES — we see it change size and direction over 3 days.
- D. Need water? Water isn’t mentioned or shown.

✔ So, correct answer for Question 2: C

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Question 3:
When you step into a dark cinema, your pupil gets bigger (dilates) to let more light in. This is your eye reacting to low light — another example of responding to a stimulus.

Options:
- A. Made of cells? True, but not what’s being shown here.
- B. Reproduce? Nope.
- C. Grow and develop? Not really — pupils dilate instantly, not grow over time.
- D. Respond to stimuli? YES — darkness is the stimulus; dilation is the response.

✔ So, correct answer for Question 3: D

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Question 4:
Getting rid of toxic products from the body = excretion.

Think of sweat, urine, CO₂ — those are ways our bodies remove waste/toxins.

Options:
- A. Absorption? Taking stuff in (like food nutrients).
- B. Digestion? Breaking down food.
- C. Excretion? Removing waste — YES!
- D. Nutrition? Getting energy from food.

✔ So, correct answer for Question 4: C

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Question 5:
Respiration is how living things release energy from food (usually using oxygen). It’s not just breathing — it’s a chemical process inside cells.

But since no multiple choice is given for Q5, and the instruction says only solve problems that have answers provided… wait — actually, looking back, Q5 doesn’t have options listed in the image. But since the user said “solve the problem accurately,” and there’s no answer choices visible for Q5, perhaps it was cut off? Or maybe it’s open-ended?

Wait — rechecking the original request: “Solve the problem accurately.” And the format requires Final Answer section. Since Q5 has no options shown, and we can’t guess them, I’ll assume the task is only to answer Questions 1–4 which clearly have boxes and options.

Actually — hold on! Looking again at the image description — Question 5 ends with “Which of the following best describes respiration?” but no options are visible below it in the text provided. So likely incomplete. We’ll skip solving Q5 since we can’t choose without options.

So final answers for Q1–Q4:

Final Answer:
1. D
2. C
3. D
4. C