Tag: morphology of leaf

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Questions Related to morphology of leaf

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

Venation is generally reticulate in ________.

  1. Monocot plants

  2. Bryophytes

  3. Thallophytes

  4. Dicot plants
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, hibiscus, papaya, ficus. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa. Leaves of monocot plants generally show parallel venation and leaves of dicot plants generally show reticulate venation.

Thus, the correct answer is 'Dicot plants.'

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

Name the plant having reticulate venation.

  1. <p>Musa</p>

  2. <p>Mangifera</p>

  3. <p>Oryza</p>

  4. <p>Canna</p>
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, hibiscus, papaya, Mangifera. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, Oryza. Leaves of monocot plants show parallel venation and leaves of dicot plants show reticulated venation. Thus, the correct answer is 'Mangifera.'

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

Unicostate venation is called as

  1. Palmate

  2. Pinnate

  3. Reticulate

  4. Parallel
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Venation is the arrangement of veins on the leaves. It is basically of 2 types, reticulate and parallel. Reticulate venation involves irregular distribution of veins to form a network. Parallel venation involves the veins running parallel to each other. Pinnate venation is also called as unicostate venation. In this, the lamina has a single principal vein or midrib. It produces lateral veins. Palmate venation is also called as multicostate venation. In this, lamina has more than one principal vein. 

Thus, the correct answer is 'Pinnate.'

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

Multicostate parallel venation occurs in

  1. Banana and Canna

  2. Mango and Peepal

  3. Grasses and Palms

  4. Castor and Tapioca

  5. Castor and China Rosa
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Venation is the arrangement of veins on the leaves. It is basically of 2 types, reticulate and parallel. Reticulate venation involves irregular distribution of veins to form a network. Parallel venation involves the veins running parallel to each other. In pinnate or unicostate venation, the lamina has a single principal vein or midrib. It produces lateral veins. In palmate or multicostate venation, lamina has more than one principal vein. In Grasses and Palms, the venation is multicostate parallel. 

Thus, the correct answer is 'Grasses and Palms.'

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

The row of smaller leaves lying in the mid-ventral line of members of Acrogenous Jungermanniales are termed as _____________.

  1. Amphigastria

  2. Amphithecium

  3. Amphigenous

  4. Amphigynous
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In Jungermanniales, the leaves are arranged in three rows, two lateral and one ventral. The smaller ventral leaves are called amphigastria or underleaves.

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

State whether the following statements are true or false.
Monocots have parallel venation in their leaves, while dicots have netted venation.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Answer A: True
Monocots leaf veins are arranged in parallel venation and dicot leaf veins are arranged in reticulate or netted venation.
Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

Which of the following kinds of venation is present in banana?

  1. Reticulate unicostate

  2. Reticulate multicostate

  3. parallel unicostate

  4. parallel multicostate
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Pinnate or unicostate parallel venation: In such venation, lamina has a single prominent vein or midrib extending from the base to the apex of the lamina, e.g., Banana etc.

So the correct answer is 'parallel unicostate'.

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

Anisophylly can be traced in

  1. Trapa

  2. Ranunculus

  3. Strobilanthes&nbsp;

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anisophylly is term commonly referred to explain plant having pairs of leaves with the significant difference in their size between two leaves. Goldfussia (Strobilanthes anisophyllus) is an evergreen shrub. It has glossy, dark green leaves of unequal size, which are stained blackish purple on both sides. Mauve flowers appear in spring and intermittently throughout the year. Thus, anisophylly is observed in Strobilanthes.

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

A dicot leaf having parallel venation is

  1. <p>Eryngium</p>

  2. <p>Zizyphus</p>

  3. <p>Ricinus</p>

  4. <p>Cassia</p>
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, Hibiscus, papaya, Ficus, Bambusa. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, plum, Zea (maize). Leaves of monocot plants show parallel venation and leaves of dicot plants show reticulated venation. However, there are exceptions in dicots  like Corymbium, Calophyllum, Eryngium. They show parallel venation. 

Thus, the correct answer is 'Eryngium.'

Multiple choice botany leaf - external morphology venation arrangement of leaves morphology of leaf

Reticulate venation is a characteristic of dicots. An exception to this generalisation?

  1. Calophyllum

  2. Ficus

  3. Hibiscus

  4. Zizyphus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Reticulate venation is a characteristic of dicots while parallel venation is of monocots. But there are some exceptions as some dicot plants show parallel venation, e.g., Calophyllum, Corymbium, etc., and reticulate venation is also shown by some monocot plant e.g., Alocasia, Smilax, etc.

So,the correct answer is " Calophyllum ".