NEET Biology Mock Test

1. Which of the following structures are commonly present in angiosperms despite their wide diversity in external morphology?

A. Roots, stems, leaves, flowers and fruits B. Roots, stems, leaves and spores C. Stems, leaves, cones and seeds D. Roots, flowers, spores and cones

2. In a typical flowering plant, which of the following correctly describes the root system and shoot system?

A. The underground part forms the shoot system, while the above-ground part forms the root system B. The underground part forms the root system, while the above-ground part forms the shoot system C. Both root and shoot systems are present only underground D. The root system consists of flowers and fruits, while the shoot system consists of roots and leaves

3. In the majority of dicotyledonous plants, the primary root develops directly from which of the following?

A. Plumule B. Radicle C. Cotyledon D. Hypocotyl

4. In a typical tap root system, the lateral roots arising from the primary root are classified into which of the following?

A. Radicle and plumule roots B. Secondary, tertiary and higher-order roots C. Adventitious and fibrous roots only D. Stem roots and leaf roots

5. Which of the following plants exhibits a tap root system formed by the primary root and its branches?

A. Wheat B. Rice C. Mustard D. Maize

6. What happens to the primary root in most monocotyledonous plants?

A. It develops into a persistent tap root system B. It is replaced by a large number of roots C. It develops into the main stem D. It produces flowers directly

7. In wheat plants, the fibrous root system originates from which part of the plant?

A. Radicle B. Tip of the primary root C. Base of the stem D. Lateral branches of the primary root

8. Roots that arise from plant parts other than the radicle, as seen in grass, Monstera and banyan, are called:

A. Tap roots B. Fibrous roots C. Lateral roots D. Adventitious roots

9. Which of the following is NOT a function of the root system in flowering plants?

A. Absorption of water and minerals from the soil B. Providing anchorage to the plant C. Synthesis of plant growth regulators D. Manufacturing food through photosynthesis

10. Which structure covers the apex of a root and protects it as the root grows through the soil?

A. Root hair B. Root cap C. Apical bud D. Lateral root

11. What is the primary function of the root cap in a flowering plant?

A. Absorption of water and minerals B. Protection of the tender root apex while growing through the soil C. Storage of reserve food materials D. Formation of lateral roots

12. In a typical root, where is the region of meristematic activity located?

A. At the root hair zone B. A few millimetres above the root cap C. At the base of the stem D. At the region of lateral root formation only

13. Which of the following characteristics are associated with the cells of the root’s region of meristematic activity?

A. Large cells with thick walls and no protoplasm B. Small cells with thin walls and dense protoplasm C. Elongated cells with large intercellular spaces D. Dead cells with heavily lignified walls

14. What is the main characteristic activity of cells in the root’s region of meristematic activity?

A. They absorb water through root hairs B. They divide repeatedly to produce new cells C. They store reserve food materials D. They develop into mature xylem vessels directly

15. Which region of the root is primarily responsible for increasing the length of the root through rapid cell elongation and enlargement?

A. Region of meristematic activity B. Region of maturation C. Region of elongation D. Root cap

16. The region of a root where cells undergo rapid elongation and enlargement is called:

A. Region of maturation B. Region of meristematic activity C. Region of elongation D. Root cap

17. What happens to the cells of the elongation zone as they move towards maturity?

A. They remain permanently undifferentiated B. They gradually differentiate and mature C. They repeatedly divide without enlarging D. They form the root cap directly

18. Which region of the root is located proximal to the region of elongation and is responsible for the differentiation and maturation of cells?

A. Region of meristematic activity B. Root cap C. Region of maturation D. Region of elongation

19. Root hairs are formed from which cells in a typical flowering plant?

A. Cells of the root cap B. Epidermal cells of the region of maturation C. Cells of the region of meristematic activity D. Cells of the vascular tissue

20. What is the primary function of root hairs in flowering plants?

A. Protection of the root apex B. Absorption of water and minerals from the soil C. Transport of prepared food to the leaves D. Production of flowers and fruits

21. Which of the following best describes the stem of a flowering plant?

A. The descending part of the plant axis that absorbs water and minerals B. The ascending part of the plant axis bearing branches, leaves, flowers and fruits C. The underground part responsible only for storing food D. The part that develops exclusively from the radicle

22. From which part of the embryo does the stem develop during seed germination?

A. Radicle B. Cotyledon C. Plumule D. Root cap

23. Which of the following structures characteristically divide the stem of a flowering plant into distinct regions?

A. Root hairs and root caps B. Nodes and internodes C. Primary and secondary roots D. Petals and sepals

24. Which statement correctly distinguishes nodes from internodes in the stem of a flowering plant?

A. Nodes are the portions between two leaves, while internodes are the points where roots arise B. Nodes are the regions where leaves are born, while internodes are the portions between two nodes C. Nodes are present only underground, while internodes are present only above the ground D. Nodes produce flowers, while internodes produce fruits exclusively

25. Which two types of buds are commonly found on the stem of a flowering plant?

A. Root buds and leaf buds B. Primary buds and secondary buds C. Terminal buds and axillary buds D. Floral roots and adventitious buds

26. What is the typical change in the appearance of a stem as a flowering plant grows?

A. It is woody and dark brown when young and becomes green later B. It is generally green when young and often becomes woody and dark brown later C. It remains soft and green throughout the plant’s life D. It becomes colourless and transparent as it matures

27. What is the main function of the stem in a flowering plant?

A. Absorbing water and minerals directly from the soil B. Spreading out branches bearing leaves, flowers and fruits C. Protecting the root apex during growth D. Producing root hairs for mineral absorption

28. Which substances are conducted by the stem in a flowering plant?

A. Water, minerals and photosynthates B. Only water and oxygen C. Only minerals and stored proteins D. Carbon dioxide and nitrogen only

29. Apart from conduction and bearing branches, which of the following are additional functions performed by modified stems in some plants?

A. Absorption of water, mineral synthesis and transpiration B. Storage of food, support, protection and vegetative propagation C. Formation of root hairs, absorption and root cap protection D. Production of pollen grains and ovules only