Root, stem, and leaves - class-VI

root, stem, and leaves

35 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

The bulliform cells of leaves lose their turgidity during excessive _____________.

  1. Assimilation
  2. Transpiration
  3. Photosynthesis
  4. Respiration
Question 2 Multiple Choice (Single Answer)

How much water a mango tree can transprire during its growing season?

  1. $350 - 750$ liters/ day
  2. $350 - 1750$ liters/ day
  3. $750 - 3500$ liters/ day
  4. $1750 - 3500$ liters/ day
Question 3 Multiple Choice (Single Answer)

Meaningful girdling (ringing) experiment can not be performed within sugarcane because

(a) its phloem is situated interior to xylem
(b) its stem surface is covered with worry coating
(c) its vascular bundles are not present in a ring
(d) its stem is thin $13$. Guttation is caused by

  1. Transpiration
  2. Osmosis/ DPD
  3. Root pressure
  4. Osmotic pressure
Question 4 Multiple Choice (Single Answer)

In the leaves of strawberry, water appears to be exuded through leaf margins. This is due to the combination of:
i. Adhesion
ii. Root pressure
iii. Transpiration
iv. Guttation.

  1. i, ii and iii
  2. ii, iii and iv
  3. i, ii and iv
  4. Only i, & iv
Question 5 Multiple Choice (Single Answer)

Transpiration.

  1. There are stomata on the leaves of the plants.Through these opening the excess of water is thrown out in the form of water vapors. This process is called transpiration
  2. There are two guard cells around the opening of stomata.They have an external membrane. They control the opening and closing of the stomata.
  3. Also come amount of water is lost due to evaporation from the leaves.
  4. As a result, water level in the epidermal layer of the leaf decrease
  5. To compensate this loss,more water is brought to the leaves through the xylem.
  6. Transpiration thus helps in absorption of water and minerals and their distribution to all parts of the plant
  7. Root pressure pushes the water up during the night time.
Question 6 Multiple Choice (Single Answer)

The droplets of water arranged at the edges of leaves of roses in the morning are

  1. Water drops condensed from the atmosphere during night at low temperatures
  2. Water transpired from the stomata and lenticels
  3. Water produced on the leaves from the reaction of hydrogen and atmospheric oxygen
  4. None of the above
Question 7 Multiple Choice (Single Answer)

Transpiration is mainly a process of ______________.

  1. Imbibition
  2. Respiration
  3. Osmotic pressure
  4. Diffusion
Question 8 Multiple Choice (Single Answer)

Wilting occurs when there is ___________________.

  1. Transpiration higher than absorption
  2. Absorption higher than transpiration
  3. Higher relative humidity of atmosphere
  4. Excess root pressure
Question 9 Multiple Choice (Single Answer)

The process of loss of water through the leaves and stem is called

  1. Transpiration
  2. Respiration
  3. Photosynthesis
  4. Pollination
Question 10 Multiple Choice (Single Answer)

In transpiration, water is lost in         form whereas in guttation water is lost in the form of          

  1. Vapour, liquid
  2. Liquid, vapour
  3. Solid, vapour
  4. Vapour, solid
Question 11 Multiple Choice (Single Answer)

The process by which plants lose water from leaves by evaporation is called as

  1. Respiration
  2. Photosynthesis
  3. Transpiration
  4. Absorption
Question 12 Multiple Choice (Single Answer)

Transpiration takes place maximum through which of the following structures in plants?

  1. Flowers
  2. Stem
  3. Leaves
  4. Roots
Question 13 Multiple Choice (Single Answer)

Potometer works on the principle of -

  1. Potential difference between the tip of the

    tube and that of the plant
  2. Amount of water absorbed equals the amount

    transpired
  3. Osmotic pressure
  4. Root pressure
Question 14 Multiple Choice (Single Answer)

Transpiration is best defined as

  1. loss of water from the plant
  2. loss of water as vapour from the plant
  3. evaporation of water from the surface of leaves
  4. None of the above
Question 15 Multiple Choice (Single Answer)


During transpiration, the leaves lose more water from their upper surface.

  1. True
  2. False
Question 16 Multiple Choice (Single Answer)

State whether the following statements are True or False. Rewrite the false statements correctly.
Transpiration is the loss of water from the roots of the plant.

  1. True
  2. False
Question 17 Multiple Choice (Single Answer)

Which of the following plants do not transpire?

  1. Algae
  2. Fungi
  3. Submerged hydrophytes
  4. All of the above
Question 18 Multiple Choice (Single Answer)

The stem of the plant when cut and dipped in the water helps in the transport of 

  1. Water
  2. Minerals
  3. Food
  4. All of the above
Question 19 Multiple Choice (Single Answer)

The plants with weak stem growing by spreading on the ground are 

  1. Creepers
  2. Runners
  3. Climbers
  4. None of the above
Question 20 Multiple Choice (Single Answer)

The water and minerals are conducted by the stem to which part/s of the plant?

  1. Leaves
  2. Flowers
  3. Buds
  4. All of the above
Question 21 Multiple Choice (Single Answer)

The stem was cut and dipped in water and red ink and colour of the leaves became red due to 

  1. The absorption of red ink by the leaves from the water
  2. The conduction of water and ink by the stem
  3. The loss of green colour from the leaves
  4. None of the above
Question 22 Multiple Choice (Single Answer)

Axillary buds develop

  1. Endogenously from plerome
  2. Endogenously from pericycle
  3. Exogenously from outer cortex
  4. Exogenously from epidermis
Question 23 Multiple Choice (Single Answer)

Which is not a characteristic feature of the stem?

  1. Arises from plumule and is ascending
  2. Growing apex is having a bud
  3. Hairs are multicellular
  4. Branches arise endogenously
Question 24 Multiple Choice (Single Answer)

Primary phloem, secondary phloem, internal phloem and included phloem, occur in the stem of ______________.

  1. Salvadora
  2. Leptadenia
  3. Aristolochia
  4. Nyctanthes
Question 25 Multiple Choice (Single Answer)

Ginger is

  1. Stem
  2. Root
  3. Fruit
  4. Bulb
Question 26 Multiple Choice (Single Answer)

Hardest leaves are found in?

  1. Victoria regia
  2. Rafflesia
  3. Raphia vinifera
  4. Metasequoia
Question 27 Multiple Choice (Single Answer)

The primary function of leaf is ________.

  1. Growth
  2. Reproduction
  3. Photosynthesis
  4. Protection
Question 28 Multiple Choice (Single Answer)

The petiole is also known as _________.

  1. Peduncle
  2. Hypopodium
  3. Mesopodium
  4. Epipodium
Question 29 Multiple Choice (Single Answer)

________ is taken as leaf cutting in Peperomia.

  1. Only Leaf petiole
  2. Part of the leaf
  3. Entire leaf including petiole
  4. Leaf blade
Question 30 Multiple Choice (Single Answer)

Which of the following are called food factories of the plants?

  1. Leaves
  2. Stem
  3. Roots
  4. Flowers
Question 31 Multiple Choice (Single Answer)

Match the column I with column II and select correct option.

Column-I Column-II
(a) Pedicel i Reduced leaf
(b) Peduncle ii Stalk of the flower
(c) Bract iii Stalk of the leaf
(d) Petiole iv Inflorescence axis
  1. a-ii, b-iv, c-i, d-iii
  2. a-iii, b-iv, c-i, d-ii
  3. a-i, b-iii, c-iv, d-ii
  4. a-iv, b-i, c-ii, d-iii
Question 32 Multiple Choice (Single Answer)

Which of the following part of the plant performs photosynthesis?

  1. Leaves
  2. Stem
  3. Roots
  4. Root nodules
Question 33 Multiple Choice (Single Answer)

Epiphyllous buds develop from

  1. Leaf surface
  2. Leaf axil
  3. Leaf base
  4. Stipule
Question 34 Multiple Choice (Single Answer)

Which part of the leaf is useful for exchanging gases between the plant and the atmosphere?

  1. Midrib
  2. Stomata
  3. Veins
  4. Petiole
Question 35 Multiple Choice (Single Answer)

Which one of these is not a part of a leaf?

  1. Midrib
  2. Lamina
  3. Leaf Base
  4. Stamen