Topicwise Questions - Plants and Trees

1. Trees are leafless for a shorter or longer season of the year in

  1. Evergreen forest
  2. Mangrove forest
  3. Scrub Jungle forest
  4. Deciduous forest

2. Oxygen liberated during photosynthesis is coming from

  1. Carbon dioxide
  2. Water
  3. Break down of chlorophyll
  4. Atmosphere

3. Stilt roots are found in -

  1. Banyan
  2. Maize
  3. Mango
  4. China rose

4. With which one of the following is Dalbergia species associated?

  1. Walnut
  2. Sandalwood
  3. Teak
  4. Rosewood

5. Which one of the following parts of the pitcher plant becomes modified into a pitcher?

  1. Leaf
  2. Flower
  3. Fruit
  4. Flower bud

6. The age of a tree can be determined more or less accurately by

  1. finding the ratio of height to the width of the tree
  2. counting the number of rings in the trunk
  3. measuring the height of the tree
  4. measuring the diameter of the trunk

7. What type of roots are the hanging structures in a banyan tree?

  1. Buttress roots
  2. Storage roots
  3. Stilt roots
  4. Prop roots

8. Fruits of this plant are found underground -

  1. Potato
  2. Carrot
  3. Groundnut
  4. Onion

9. Which one of the following areas is noted for mangrove vegetation?

  1. Lava forest of Kalimpong
  2. Sajnekhali forest of South 24 Parganas
  3. Dandakaranya forest of Orissa
  4. Corbet National Park of U. P.

10. Which of the following is the tallest perennial grass?

  1. Nile grass
  2. Paddy plant
  3. Sugarcane
  4. Bamboo

11. Which of the following is not a root?

  1. Potato
  2. Carrot
  3. Radish
  4. Turnip

12. Which of the following was the first flower to blossom from the atomic-bomb scorched earth of Hiroshima?

  1. Hibiscus
  2. Rhododendron
  3. Bougainvillea
  4. Oleander

13. Certain parts of a plant can be bent easily without breaking. This flexibility in certain parts, like leaf and stem, can be attributed to the abundance of

  1. parenchyma
  2. collenchyma
  3. sclerenchyma
  4. xylem and phloem

14. Which of the following is not a micronutrient for a plant?

  1. Iron
  2. Magnesium
  3. Molybdenum
  4. Manganese

15. Which one among the following nutrients is a structural component of the cell of plants?

  1. Manganese
  2. Potassium
  3. Phosphorous
  4. Calcium

16. The common edible mushroom is a

  1. mass of fungal spores
  2. type of hypha
  3. tightly packed mycelium
  4. structure used for producing asexual spores

17. The main function of the inner bark of a woody plant is to

  1. transport minerals and water from the roots to the leaves
  2. act as a membrane impermeable to water and gas
  3. transport food from the leaves to the other parts of the plant
  4. protect the plant from herbivorous animals


18. Sandalwood tree is considered a

  1. total root parasite
  2. total stem parasite
  3. stem parasite
  4. partial root parasite

19. Biological catalysts in living organisms are known as

  1. hormones
  2. vitamins
  3. steroids
  4. enzymes

20. To which one of the following types of organism do mushrooms belong?

  1. Algae
  2. Ferns
  3. Fungi
  4. Lichens

21. Which one of the following types of plants produces spores and embryo, but without seeds and vascular tissues?

  1. Gymnosperms
  2. Pteridophytes
  3. Bryophytes
  4. Angiosperms


22. Which among the following is not a true fruit?

  1. Apple
  2. Date
  3. Grape
  4. Plum

23. Xerophytes thrive in

  1. hot and arid condition
  2. cool and wet condition
  3. hot and wet condition
  4. cool and arid condition

24. Biodiversity is highest in

  1. Tundra zone
  2. Prairie zone
  3. Temperate zone
  4. Tropic zone

25. Which of the following plants is referred to as a living fossil?

  1. Ephedra
  2. Cycas
  3. Ginkgo
  4. Adiantum

26. Softening of mature ripe fruits is due to

  1. dissolution of middle lamella
  2. degradation of primary wall
  3. delignification
  4. removal of suberin deposits in the cell wall

27. Which part of saffron plant is used to obtain the spice ‘saffron’?

  1. Dry stigma
  2. Leaves
  3. Fruits
  4. Petals

28. Which one of the following processes takes place in lakes during eutrophication?

  1. Rapid destruction of algal growth
  2. Excessive availability of dissolved oxygen
  3. Loss of dissolved nutrients from water
  4. Excessive entry of nutrients into water

29. Which of the following organelles of a cell is/are involved in photosynthesis?

  1. Chloroplast
  2. Mitochondrion
  3. Endoplasmic reticulum
  4. Golgi bodies

30. The chief function of stilt root is to provide

  1. Aeration
  2. Nutrition
  3. Support
  4. Storage of food

31. Which of the following is an example of a plant that bears seeds but not fruits?

  1. Pine tree
  2. Peepal tree
  3. Cotton plant
  4. Eucalyptus tree

32. Root nodules are commonly found in

  1. Parasitic plants
  2. Epiphytic plants
  3. Leguminous plants
  4. Aquatic plants

33. The floral part that produces pollen grains is

  1. Sepal
  2. Petal
  3. Anther
  4. Ovary

34. Opium is a plant product obtained from

  1. dried leaves
  2. dried latex
  3. roots
  4. stem bark

35. The scientific method of dating based on the analysis of patterns of tree rings is known as

  1. Dendrochronology
  2. Sclerochronology
  3. Paleoecology
  4. Acanthochronology

36. Which of these trees do not have annual growth rings?

  1. Banyan trees
  2. Oaks
  3. Palm trees
  4. Pine trees