Leaf Venation

Q.

What is venation? Give its types.?

Q.

Reticulate venation is found in dicot leaves while in monocot leaves venation is of parallel type. Biology being a 'Science of exceptions', find out any exception to this generalisation.

Q. Which of the following is not a stem modification?

1. Pitcher of Nepenthes
2. Thorns of Citrus
3. Tendrils of cucumber
4. Flattened structures of Opuntia

Q.

Name the following:

A plant with variegated leaf.

Q. What is the difference between fusiform root and conical root?

Q. Leaves of dicotyledonous plants possess _________ venation, while _________ venation is the characteristic of most
monocotyledons.

1. reticulate and parallel
2. parallel and reticulate
3. reticulate and perpendicular
4. obliquely and parallel

Q.

Draw diagrams of a typical monocot an dicot leaves to show their venation pattern.

Q.

Is onion a tap root?

Q.

Where does root arise in monstera?

Q.

What is the root system present in grass .? ( fibrous or adventitious)

Q.

If a plant has fibrous roots, what type of venation are its leaves likely to have?

Q.

Money plant and croton have ___________ leaves.

Q. Following figure shows ____________ type of leaf.

1. Simple leaf with pinnate venation
2. Pinnately Compound leaf
3. Palmately Compound leaf
4. Simple leaf with palmate venation

Q.

A leaf has veinlets parallel to each other. But, the veinlets are not parallel to the midrib. Can the leaf be considered to have a parallel venation?

Q.

The gynoecium is also known as the pistil.

1. True
2. False

Q.

Reticulate and parallel venation are the characteristic of ......... and ....... respectively.

Q. Which type of leaf venation is found in monocotyledonous plants?

Q.

Venation is the term used to describe the pattern of arrangement of

1. Floral organs

2. Flowers in an inflorescence

3. Veins and vienlets in a lamina

4. Sepals or petals in a flower

Q. Veins running parallel to each other in leaf blade is characteristic feature of

1. monocots
2. dicots
3. both monocots and dicots
4. all angiosperms

Q.

Veins are present in

1. stems

2. roots

3. leaves

4. seeds

Q.

Venation is a term used to describe the pattern of arrnagement of

(a) floral organs

(b) flower in infloresence

(c) veins and veinlets in a lamina

(d) all of them

Q. Which of the following types of venation is exhibited by banana leaves?

1. Reticulate
2. Parallel
3. Perpendicular
4. Criss-cross

Q. Read the assertion and reason carefully to mark the correct option in question.

Assertion: Leaf is a lateral outgrowth of stem developed exogenously at the node.

Reason: The floral characteristics form the basis of classification and identification of flowering plants.

1. If both assertion and reason are true but reason is not the correct explanation of the assertion.
2. If both assertion and reason are true and the reason is the correct explanation of the assertion.
3. If assertion is true but reason is false.
4. If both assertion and reason are false.

Q. All plants have similar arrangement of veins in their leaves.

1. True
2. False

Q. Which of the following plants shows parallel venation?

1. Potato
2. Groundnut
3. Pea plant
4. Lily

Q.

Multicostate parallel venation of leaf is found in

1. grass, palm

2. Dalbergia

3. Argemone

4. Mangifera

Q. Which part of the leaf has to be observed to know the type of venation?

1. Petiole
2. Lamina
3. Leaf base
4. Stipules

Q. Which of the following is not the lateral branches of the roots?

1. Tertiary roots
2. Secondary roots
3. Primary root
4. More than one option is correct

Q. Match the column I, II and III and choose the correct combination from the options given.

Column I	Column II	Column III
a)	1) Parallel venation	K) Dicots
b)	2) Reticulate venation	L) Neem
c)	3) Pinnately compound leaf	M) Silk cotton
d)	4) Palmately compound leaf	N) Monocots

Q. What are the different types of roots?