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Olympiad Test: Living Organisms And Their Surroundings -2 - Class 6 MCQ


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10 Questions MCQ Test Science Olympiad Class 6 - Olympiad Test: Living Organisms And Their Surroundings -2

Olympiad Test: Living Organisms And Their Surroundings -2 for Class 6 2024 is part of Science Olympiad Class 6 preparation. The Olympiad Test: Living Organisms And Their Surroundings -2 questions and answers have been prepared according to the Class 6 exam syllabus.The Olympiad Test: Living Organisms And Their Surroundings -2 MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Living Organisms And Their Surroundings -2 below.
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Olympiad Test: Living Organisms And Their Surroundings -2 - Question 1

Mike had a glass tank containing some earthworms, dead leaves and maize seeds. He added another animal into the tank. He observed the tank for a few hours. Then he drew a graph to show his observations.

Q. By looking at the graph, we can tell that the animal that Mike put in was a .

Olympiad Test: Living Organisms And Their Surroundings -2 - Question 2

Samantha found a healthy plant with red leaves in her garden. She said that the plant is not able to make food because its leaves are not green. Is Samantha correct?

Detailed Solution for Olympiad Test: Living Organisms And Their Surroundings -2 - Question 2

Chlorophyll is the green pigment found in the chloroplasts of plant cells, which is essential for photosynthesis, the process by which plants make food using sunlight, water, and carbon dioxide. Without chlorophyll, the plant cannot perform photosynthesis, even if it has other pigments like red. Therefore, Samantha is correct in stating that the plant cannot make food because it lacks chlorophyll due to its non-green leaves.

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Olympiad Test: Living Organisms And Their Surroundings -2 - Question 3

Study the flowchart below carefully

Put the following animals: lizard, zebra, man and dragonfly on the boxes above.

Olympiad Test: Living Organisms And Their Surroundings -2 - Question 4

Based on the information below, answer the following questions:

Q. Identify the characteristic(s) that is/are common for both organisms R and S.

Olympiad Test: Living Organisms And Their Surroundings -2 - Question 5

Look at the following pictures carefully.

Q. The two living organisms in these pictures are_____________  and the common life process that occurs in both the living organism is_________________ .

Olympiad Test: Living Organisms And Their Surroundings -2 - Question 6

These living organisms excrete uric acid:

Detailed Solution for Olympiad Test: Living Organisms And Their Surroundings -2 - Question 6
Living organisms that excrete uric acid:
- Birds: Birds excrete uric acid as their primary nitrogenous waste product. Uric acid is a waste product of protein metabolism and is formed in the liver. Birds have a unique adaptation in their kidneys that allows them to excrete uric acid in the form of a semi-solid paste, rather than a liquid urine like mammals.
- Lizards: Lizards, including reptiles in general, also excrete uric acid. Similar to birds, reptiles have a highly efficient renal system that enables them to conserve water by excreting uric acid as a paste-like substance.
Conclusion:
The correct answer is A and B both, as both birds and reptiles (which include lizards) excrete uric acid as their primary nitrogenous waste product.
Olympiad Test: Living Organisms And Their Surroundings -2 - Question 7

When plants grow in dark, they become tall, yellowish and weak, and the leaves are very small.

Q. This happens because of:

Olympiad Test: Living Organisms And Their Surroundings -2 - Question 8

​Read the features of a plant as given below:
1. They have waxy upper surface.
2. Leaves are large and flat.
3. Roots are much reduced in size.
4. Stems are generally long and narrow.

Q. To which of the following habitats does this plant belong?

Detailed Solution for Olympiad Test: Living Organisms And Their Surroundings -2 - Question 8
Features of the plant:
- Waxy upper surface of leaves
- Large and flat leaves
- Reduced size of roots
- Long and narrow stems
Explanation:
Based on the given features, we can determine the habitat of the plant:
1. Waxy upper surface of leaves: This feature helps in reducing water loss through transpiration. It is commonly found in plants that grow in dry environments.
2. Large and flat leaves: This characteristic is often observed in plants that need to maximize their surface area for photosynthesis. They are usually found in habitats with ample sunlight.
3. Reduced size of roots: Plants with reduced root size are adapted to habitats where water availability is limited. This adaptation helps them to conserve water effectively.
4. Long and narrow stems: Such stems are commonly found in plants growing in habitats with strong winds. The long and narrow shape helps them to resist wind damage.
Conclusion:
Considering the features mentioned, the plant described in the question is likely to belong to the desert habitat. Desert plants often have waxy leaves to reduce water loss, large flat leaves to maximize photosynthesis, reduced roots to conserve water, and long narrow stems to withstand wind.
Olympiad Test: Living Organisms And Their Surroundings -2 - Question 9

What is a common character among the following animals?

Olympiad Test: Living Organisms And Their Surroundings -2 - Question 10

Four groups of mice were taken for an experiment. One group was control group and other three were test groups. The test groups consume different amounts of sweetener in their food. The control group is the one that receives:

Detailed Solution for Olympiad Test: Living Organisms And Their Surroundings -2 - Question 10

The control group in the experiment is the group that serves as a comparison to the test groups. It does not receive any sweetener in its food. The other three test groups consume different amounts of sweetener in their food.
Test groups:
- Group A: This test group receives 10 mg/day of sweetener in their food.
- Group B: This test group receives 50 mg/day of sweetener in their food.
- Group C: This test group does not receive any sweetener in their food.
- Group D: This test group receives extra food, but no sweetener.
Explanation:
- The purpose of having a control group is to provide a baseline for comparison. By not giving any sweetener to the control group, any changes observed in the test groups can be attributed to the sweetener and not other factors.
- Group A and Group B are the test groups that receive different amounts of sweetener in their food. These groups are used to study the effects of different dosages of sweetener.
- Group C is the control group that does not receive any sweetener. By comparing the results of Group C with the test groups, the researchers can determine the impact of the sweetener on various factors.
- Group D is not a test group related to the sweetener. It receives extra food, but no sweetener. This group may serve as a control group for other factors being studied in the experiment.
In conclusion, the control group in this experiment is the one that does not receive any sweetener in their food (Group C).
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