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Tissue in Action - 2 - Free MCQ Practice Test with solutions, Class 9 Science


MCQ Practice Test & Solutions: Test: Tissue in Action - 2 (15 Questions)

You can prepare effectively for Class 9 Science Class 9 New NCERT 2026-27 (New Syllabus) with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Tissue in Action - 2". These 15 questions have been designed by the experts with the latest curriculum of Class 9 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 15 minutes
  • - Number of Questions: 15

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Test: Tissue in Action - 2 - Question 1

What is the key structural difference between blood and bone that makes them both classified as connective tissue?

Detailed Solution: Question 1

Both blood and bone are connective tissues because they connect and support other tissues. The key difference lies in their matrix. Blood has a fluid matrix called plasma, which contains RBCs, WBCs, and platelets, and it transports nutrients, gases, and hormones. Bone has a rigid, hard matrix containing calcium and phosphorus compounds, which gives the body strength, support, and protection.

Test: Tissue in Action - 2 - Question 2

Which type of muscle tissue is cylindrical, branched, has a single nucleus, works involuntarily, and never experiences fatigue?

Detailed Solution: Question 2

Cardiac muscle is found only in the heart. It is cylindrical and branched, has a single nucleus, and shows faint striations. It works involuntarily — it does not require conscious control — and beats tirelessly throughout life without fatigue. Skeletal muscles are voluntary and multinucleate. Smooth muscles are spindle-shaped with no striations and are also involuntary but found in organs like the stomach and intestines.

Test: Tissue in Action - 2 - Question 3

Which of the following correctly describes the structure of a neuron?

Detailed Solution: Question 3

A neuron (nerve cell) has three main parts. The cell body contains the nucleus and controls cell activities. Dendrites are branch-like projections that receive signals from other neurons. The axon is a long fibre that carries messages away from the cell body and ends at axon terminals, which transmit messages to other cells. Nervous tissue forms the body's control and coordination network.

Test: Tissue in Action - 2 - Question 4

Which type of joint allows movement in only one direction, like bending and straightening?

Detailed Solution: Question 4

A hinge joint works like a door hinge, allowing movement in only one direction — bending and straightening. Examples include the elbow and knee joints. A ball and socket joint allows movement in multiple directions including circular movement (e.g., shoulder and hip). A pivot joint allows rotation (e.g., neck). A fixed joint allows no movement at all (e.g., skull bones).

Test: Tissue in Action - 2 - Question 5

What connects muscle to bone in the musculoskeletal system?

Detailed Solution: Question 5

Tendons are tough connective tissues that connect muscles to bones, enabling muscles to pull on bones and produce movement. Ligaments, on the other hand, connect bone to bone, providing stability and preventing dislocation. Cartilage is a soft, jelly-like connective tissue that cushions bone ends and provides flexibility. These are all important components of the musculoskeletal system.

Test: Tissue in Action - 2 - Question 6

What is the function of cartilage discs present between vertebrae in the backbone?

Detailed Solution: Question 6

The backbone (vertebral column) is made up of a series of small bones called vertebrae. Between each vertebra is a cartilage disc that acts as a cushion. This allows the backbone to be flexible without injuring the spinal cord running through it. This is why we can bend, twist, and move our back in various directions while the spinal cord remains protected.

Test: Tissue in Action - 2 - Question 7

In F. C. Steward's experiment on carrot phloem cells, which combination of conditions produced the highest increase in fresh weight?

Detailed Solution: Question 7

According to Steward's experiment, the combination of liquid medium with nutrients, in the presence of both light and air, showed a 20% increase in fresh weight — the highest among all conditions tested. When either light or air was absent, or when a solid medium was used, growth was reduced. This shows that light, air, and an appropriate liquid nutrient medium are all essential for the growth of carrot phloem cells.

Test: Tissue in Action - 2 - Question 8

The process by which meristematic tissue becomes specialised to perform specific functions is called:

Detailed Solution: Question 8

Due to continuous cell division, meristematic tissue adds new cells to the plant body. Some of these newly formed cells remain meristematic, but others lose the ability to divide and undergo changes to become permanent tissues specialised to perform specific functions like support, transport, or storage. This process of becoming specialised is called differentiation.

Test: Tissue in Action - 2 - Question 9

Which of the following statements about sclerenchyma is correct?

Detailed Solution: Question 9

Sclerenchyma is a simple permanent tissue made of dead cells with very thick walls due to the deposition of lignin. This makes it hard and strong, providing rigidity and mechanical strength to plants. It is found in stems, leaf veins, and seed coats such as coconut husk and walnut shell. Parenchyma stores food and performs photosynthesis, while collenchyma provides flexibility.

Test: Tissue in Action - 2 - Question 10

Crown gall disease in plants, characterised by tumour-like swellings on stems due to uncontrolled cell division, is caused by which bacterium?

Detailed Solution: Question 10

Crown gall disease is caused by the bacterium Agrobacterium tumefaciens. It causes tumour-like swellings on stems due to rapid and uncontrolled cell division. Scientists studied how this bacterium transfers its genetic material into plant cells, and this understanding was later applied in plant tissue culture and genetic engineering. Today, Agrobacterium is used as a tool to introduce beneficial genes into plants to produce improved and disease-resistant varieties.

Test: Tissue in Action - 2 - Question 11

Which of the following correctly explains why plants have meristematic tissue but animals do not have an equivalent?

Detailed Solution: Question 11

Plants and animals differ in how they grow. Plants grow in a localised manner — specific regions called meristems contain actively dividing cells responsible for growth. Animals, on the other hand, show mostly distributed growth throughout the body, where most body cells can divide when needed. This difference in growth pattern is one of the key reasons why plant and animal tissues are structurally different.

Test: Tissue in Action - 2 - Question 12

Aquatic plants like water hyacinth float on water. Which tissue is responsible for this and how?

Detailed Solution: Question 12

Parenchyma is a simple permanent tissue made of living cells with thin walls and loosely packed cells with intercellular spaces. In aquatic plants, parenchyma forms large air spaces between cells. These air spaces trap air and provide buoyancy, helping the plant float on water. This is a specialised form of parenchyma called aerenchyma. Parenchyma also stores food and performs photosynthesis in green parts of the plant.

Test: Tissue in Action - 2 - Question 13

A ligament and a tendon are both connective tissues but serve different purposes. Which of the following correctly distinguishes them?

Detailed Solution: Question 13

Tendons are tough connective tissues that connect muscles to bones, enabling muscles to pull on bones and produce movement. Ligaments are strong and flexible connective tissues that connect bone to bone, providing stability at joints and preventing dislocation. Both are important components of the musculoskeletal system but serve distinctly different roles — tendons enable movement while ligaments provide joint stability.

Test: Tissue in Action - 2 - Question 14

Stomata are pores found in the epidermis of leaves. Which of the following is NOT a function of stomata?

Detailed Solution: Question 14

Stomata are pores present in the epidermis of leaves. Their functions include gaseous exchange (allowing carbon dioxide in and oxygen out during photosynthesis), transpiration (loss of water vapour), and elimination of waste gases. Transpiration also creates a transpiration pull in the xylem, which helps water move upward through the plant. The absorption of water from soil is done by root hair cells, which are extensions of the root epidermis, not by stomata.

Test: Tissue in Action - 2 - Question 15

Why does the lining of the small intestine have a single layer of tall, pillar-like epithelial cells often with hair-like structures?

Detailed Solution: Question 15

The lining of the small intestine has a single layer of tall, pillar-like (columnar) epithelial cells, often with hair-like projections called microvilli. This structure maximises the surface area available for absorption of digested nutrients and water into the bloodstream. The tall shape of the cells and the hair-like projections together greatly increase the absorptive surface. This is a clear example of how the structure of a tissue is directly suited to its function.

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