Structure and Function of Plant Parts Quiz - ICSE Class 6 Biology

Free practice quiz: Structure and Function of Plant Parts (ICSE Class 6 Biology). 52 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 6 Biology practice quiz has 52 multiple-choice questions on Structure and Function of Plant Parts, and 52 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which part of the plant is primarily responsible for absorbing water and minerals from the soil?

   1. Leaves
   2. Stem
   3. Roots
   4. Flowers
   Show answer

   Answer: C. Roots

   Roots anchor the plant and their specialized structures, like root hairs, are designed to absorb water and dissolved minerals from the soil.

2. Which part of the flower is responsible for producing pollen?

   1. Stigma
   2. Style
   3. Anther
   4. Ovary
   Show answer

   Answer: C. Anther

   The anther is the part of the stamen that contains the pollen, where male gametes are produced.

3. Plants that grow in marshy areas and have roots that grow vertically upwards to get oxygen are called:

   1. Hydrophytes
   2. Xerophytes
   3. Halophytes
   4. Mangroves with pneumatophores
   Show answer

   Answer: D. Mangroves with pneumatophores

   Mangroves in marshy environments often have pneumatophores, specialized aerial roots that grow upwards and facilitate gas exchange in waterlogged soil.

4. What is the function of the phloem in the stem?

   1. To transport water and minerals upwards
   2. To provide structural support to the plant
   3. To transport sugars produced during photosynthesis
   4. To store food reserves
   Show answer

   Answer: C. To transport sugars produced during photosynthesis

   Phloem is the vascular tissue responsible for the translocation of sugars (photosynthates) from the leaves to all other parts of the plant.

5. The fleshy, swollen underground stem of a potato plant is an example of a:

   1. Rhizome
   2. Bulb
   3. Root tuber
   4. Stem tuber
   Show answer

   Answer: D. Stem tuber

   The potato is a classic example of a stem tuber, which is a swollen underground stem used for storing food and vegetative reproduction.

More questions in this quiz

Answers and explanations are in the full quiz.

1. The process of photosynthesis, where plants make their own food, primarily occurs in which part of the plant?
2. Which plant part is often modified to store food reserves for the plant?
3. The transport of water and minerals from the roots to the rest of the plant is facilitated by which vascular tissue?
4. Which of the following is NOT a typical function of a stem?
5. The bright colors and pleasant scents of flowers are primarily adaptations to attract which organisms for pollination?
6. What is the primary function of the pericarp in a fruit?
7. Which specialized cells in leaves are responsible for regulating the opening and closing of stomata?
8. Modified leaves that are often sharp and pointed, serving as a defense mechanism against herbivores, are called:
9. The structure within a plant cell that contains chlorophyll and is the site of photosynthesis is the:
10. The soft, fleshy part of a fruit that surrounds the seed is commonly referred to as the:
11. What is the name of the tissue that transports sugars produced during photosynthesis from the leaves to other parts of the plant?
12. Some plants have aerial roots that grow upwards from the soil or downwards from branches. These are known as:
13. The process of transpiration, the loss of water vapor from plants, primarily occurs through pores on the leaves called:
14. Which part of the flower develops into a fruit after fertilization?
15. What is the primary function of the sepals in a flower?
16. Modified stems that are often short, thick, and underground, used for storing food and vegetative propagation, are called:
17. The outermost layer of cells in a plant root, responsible for absorption and protection, is the:
18. Which part of the pistil is responsible for receiving pollen during pollination?
19. The vascular bundles in a plant stem are arranged in a ring in dicots, whereas in monocots they are:
20. Which plant part is primarily responsible for seed dispersal?
21. Tendrils, which are modified leaves or stems that coil around support structures, are an adaptation for:
22. The waxy layer covering the surface of leaves and stems, which reduces water loss, is called the:
23. What is the function of the style in a flower?
24. The structure that contains the female gamete (egg cell) within the ovule is the:
25. Modified leaves that are brightly colored and surround the actual flowers of some plants, attracting pollinators, are called:
26. Which type of root system consists of a central, main root from which smaller lateral roots branch off?
27. The innermost layer of the root cortex, which regulates the passage of water and solutes into the vascular cylinder, is the:
28. Which part of a seed is a protective outer covering that shields the embryo from damage and desiccation?
29. The swollen, fleshy underground stem of plants like ginger and turmeric, which grows horizontally and stores food, is called a:
30. Which part of the flower is the female reproductive organ, consisting of stigma, style, and ovary?
31. The tiny pores on the surface of a leaf that allow for gas exchange are called:
32. Which part of a seed provides nourishment to the developing embryo?
33. The process by which plants release excess water vapor into the atmosphere through their leaves is called:
34. What is the primary function of the petals in a typical flower?
35. Modified leaves that are often thin, coiled structures helping a plant to climb are known as:
36. The central core of vascular tissue in a plant stem or root is called the:
37. Which part of the plant absorbs sunlight and carbon dioxide for the process of photosynthesis?
38. What is the primary function of root hairs?
39. Which part of the flower is the male reproductive part that produces pollen?
40. The process of converting light energy into chemical energy in the form of glucose is known as:
41. A cluster of flowers arranged on a stem that may bear leaf-like structures called bracts is called an:
42. Which of the following is a modified stem that is typically short, flattened, and grows horizontally underground, often storing food?
43. The outermost layer of a fruit, which is the skin, is botanically referred to as the:
44. The stalk that supports the anther in a stamen is called the:
45. Which type of root system is characterized by a mass of thin, thread-like roots of roughly equal size arising from the base of the stem?
46. The layer of cells just inside the epidermis of a plant root, which is primarily involved in food storage, is the:
47. What is the primary role of the pericarp in a dry, dehiscent fruit like a bean pod?

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