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Morphology of Plant

Description: Morphology of plant StemStem
Number of Questions: 26
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Tags: Morphology of plant Stem
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Phylloclade is a modification of:

  1. Stem

  2. Roots

  3. Leaf

  4. Flower


Correct Option: A
Explanation:

It is a positively getophic part of plant with nodes and internodes.

Unbranched , erect , cylindrical axis with distinct nodes and internodes having a jointed appearence is called as

  1. Culm

  2. Caudex

  3. Runner

  4. Exccurrent


Correct Option: A
Explanation:

Culm is a bamboo like tree.

Which type of prostrate weak stem is present in 'doob grass'?

  1. Trailers

  2. Runners

  3. Stolon

  4. Offset


Correct Option: B
Explanation:

These are found in doob grass.

The short , stout, thick and slender condensed prostrate weak stem with distinct nodes and internodes found in aquatic plants is called

  1. Trailers

  2. Runners

  3. Stolons

  4. Offset


Correct Option: D
Explanation:

These are the aquatic weak stems.

Which of the following is not a climbing weak stem modification?

  1. Twiners

  2. Lianas

  3. Root climbers

  4. Rhizomes


Correct Option: D
Explanation:

Rhizomes are the prostrate stems that grow horizontally.

Tendrillar climbers are associated with

  1. Lathyrus

  2. Convolvulus

  3. Tinospora

  4. Pothos


Correct Option: A
Explanation:

This plant has tendrillar climbers.

In which of the following plants are the suckers present?

  1. Mentha

  2. Ginger

  3. Curcuma

  4. Colocasia


Correct Option: A
Explanation:

Mentha has sucker shoot modification.

In which of the following weak stem modifications are the thorns, hooks, prickles and spines used for climbing?

  1. Twiners

  2. Lianas

  3. Tendrillars

  4. Scramblers


Correct Option: D
Explanation:

Thorns, hooks, prickles and spines are used in scramblers.

Which of the following types of underground stem modification is present in ginger?

  1. Corm

  2. Rhizome

  3. Sucker

  4. Bulb


Correct Option: B
Explanation:

It is seen in Ginger.

Which of the following underground stem modifications is found in onion?

  1. Rhizome

  2. Corm

  3. Sucker

  4. Bulb


Correct Option: D
Explanation:

This modification is seen in onion and garlic.

Potato is an underground stem. Which type of modification is seen in it?

  1. Sucker

  2. Rhizome

  3. Bulb

  4. Tuber


Correct Option: D
Explanation:

It is the modification seen in potato.

Which of the following types of bulb modification is seen in onion?

  1. Tunicated bulb

  2. Scaly bulb

  3. Stipuled bulb

  4. Tendrillar bulb


Correct Option: A
Explanation:

It has a covering called tunic which gives it its  name.

Which of the following is a characteristic of runners?

  1. Its internodes are short.

  2. Its colour is other than green.

  3. It is an underground stem.

  4. It does not serve for perrennation.


Correct Option: D
Explanation:

Runners are not an adaptation to survive the unfavourable conditions.

Which of the following is a characteristic of sucker?

  1. It serves perennation

  2. It is photosynthetic

  3. Its internodes are long

  4. It has aerial stem


Correct Option: A
Explanation:

Sucker is an apparatus for surviving unfavourable conditions.

Which of the following is a characteristic of rhizome?

  1. It has circular nodes.

  2. It is generally perrenial.

  3. It is unbranched.

  4. It grows upright.


Correct Option: B
Explanation:

Rhizome grows for many years.

Which of the following is not a characteristic of corm?

  1. It grows upright

  2. It is usually unbranched

  3. Its roots arise only from base

  4. It has very long internodes


Correct Option: D
Explanation:

Internodes of corm are short.

In which of the following plants, underground fleshy structure is a stem?

  1. Potato

  2. Sweet potato

  3. Turnip

  4. Carrot


Correct Option: A
Explanation:

Stem is underground, with eyes on the nodes.

Biennial is the plant which

  1. Completes its life cyle in a half year

  2. Flowers once in the life time

  3. Completes its life cycle in two years

  4. Flowers twice a year


Correct Option: C
Explanation:

A biennial complete its life cycle in two years.

Thread like sensitive spirally coiled structures in plants are known as

  1. Trichomes

  2. Tendrils

  3. Prickles

  4. Thorns


Correct Option: B
Explanation:

These are the coiled structures which help the plant in climbing up.

Longer form of runners is called as

  1. Trailers

  2. Stolons

  3. Offset

  4. Twiners


Correct Option: B
Explanation:

These are synonymous to runners but have longer internodes.

Which of the following is a characteristic of bulb in contrast to corm?

  1. It is an underground stem

  2. It has distinct nodes and internodes

  3. It has food stored in stem

  4. It generally possesses a tunic


Correct Option: D
Explanation:

Tunic is a membranous protective covering over the bulb.

In which of the following plants is the phylloclade modification found?

  1. Opuntia

  2. Asparagus

  3. Ruscus

  4. Passiflora


Correct Option: A
Explanation:

Opuntia plant is a phylloclade.

Which of the following plants has axillary bud tendrils?

  1. Passiflora

  2. Cucurbita

  3. Lagenaria

  4. Vitis


Correct Option: A
Explanation:

It has axillary bud tendrils.

Which of the following is a characteristic of cladode?

  1. Stem is modified to leaf like structure.

  2. Cladode has unlimited growth.

  3. Cladode have many nodes.

  4. Cladode has reduced leaves or spines.


Correct Option: D
Explanation:

The leaves are either highly reduced or modified into spines.

In which of the following plants are the axillary buds not modified to thorns for protection of plant?

  1. Durantia

  2. Citrus

  3. Bougainvillea

  4. Passiflora


Correct Option: D
Explanation:

Their axillary buds are modified into tendrils to climb up.

Which of the following plants does not have photosynthetic stem?

  1. Ruscus

  2. Opuntia

  3. Asparagus

  4. Bougainvillea


Correct Option: D
Explanation:

Its stem is woody and non --green.

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