Tracheids

Q. Xylem in gymnosperms lack

1. Xylem Parenchyma
2. Xylem fibres
3. Tracheids
4. Vessels

Q.

What xylem means?

Q.

Which is totally absent in gymnosperms?

Q.

Pits are found in

1. sieve tube cell

2. Sieve cells

3. tracheid cells

4. companion cells

Q.

A piece of wood having no vessels (trachea) must be belong to

(a) teak

(b) mango

(c) pine

(d) palm

Q. Identify the given figure and select the correct labels for A, B and C.

1. A-Callose, B-Xylem parenchyma, C-Xylem vessel
2. A-Callose, B-Phloem parenchyma, C-Phloem vessel
3. A-Tylosis, B-Xylem parenchyma, C-Xylem vessel
4. A-Tylosis, B-Phloem parenchyma, C-Phloem vessel

Q. Which of the following statement is true?

1. Vessels are unicellular and with narrow lumen
2. Tracheids are unicellular and with wide lumen
3. Vessels are multicellular and with wide lumen
4. Tracheids are multicellular and with narrow lumen

Q. Tracheids and vessels are related with:

1. Xylem of pteridophytes

2. Xylem of angiosperms (flowering plants)

3. Xylem of gymnosperms
4. All of the above

Q. Which statement is wrong for Cycas?

1. Xylem have vessels.
2. Male cones are well developed.
3. It has coralloid roots.
4. Circinate ptyaxis.

Q. Which of the following is NOT a characteristic feature of tracheophytes?

1. Dominant stage of life cycle is sporophyte
2. Accessory spores are not available for reproduction
3. Plant body is undifferentiated mass of cells
4. Tracheophytes have well developed vascular tissues

Q. Which one among the following is correct?

1. Tracheids are unicellular with a wide lumen
2. Vessels are multicellular with a wide lumen
3. Tracheids are multicellular with narrow lumen
4. Vessels are unicellular with narrow lumen

Q. Tracheids and vessels are related with:

1. Xylem of pteridophytes

2. Xylem of angiosperms (flowering plants)

3. Xylem of gymnosperms
4. All of the above

Q. Tracheids differ from the tracheary elements in:

1. Lacking nucleus
2. Being lignified
3. Having Casparian strips
4. Being imperforate

Q. Identify the given plant tissues/ cells and match them with their respective functions [list (i)-(v)]. Select the correct option from the codes given below.
(i) Forms hypodermis of monocot stem.
(ii) Multicellular, long sized and transport water in angiosperms.
(iii) Actively transports sugar from storage organs and leaves to the parts in need.
(iv) It hardens the nut.
(v) Unicellular, small sized and transport water in pteridophytes, gymnosperms and a few angiosperms.

1. A (iii), B (ii), C (v), D (i), E (iv)
2. A (i), B (v), C (ii), D (iii), E (iv)
3. A (i), B (ii), C (v), D (iii), E (iv)
4. A (iii), B (v), C (ii), D (i), E (iv)

Q. The glomerulus is a network of parallel capillaries which are approximately ........... in number.

1. 5
2. 50
3. 500
4. 5000

Q. Water conducting elements of gymnosperms and primitive angiosperms are

1. Tracheids
2. Vessels
3. Vessel elements
4. Fibrotracheids

Q. The chief water conducting elements of xylem in gymnosperms are:

1. Fibres
2. Transfusion tissue
3. Tracheids
4. Vessels

Q. Which statement is incorrect about Cycas?

1. Its xylem has vessels.
2. It has fascinate venation.
3. It does not have well organized female flower.
4. Its roots possess some blue-green Algae.

Q.

Pits are found in

1. Xylem Parenchyma

2. Tracheids

3. Companion cells

4. Sieve tube elements

Q. Vessels are absent in

1. Gymnosperm
2. Monocot
3. Dicot
4. Angiosperm

Q. Tracheids and vessels are related with:

1. Xylem of pteridophytes
2. All of the above

3. Xylem of angiosperms (flowering plants)

4. Xylem of gymnosperms

Q. Which one among the following is correct?

1. Tracheids are multicellular with narrow lumen
2. Tracheids are unicellular with a wide lumen
3. Vessels are multicellular with a wide lumen
4. Vessels are unicellular with narrow lumen

Q.

The chief water conducting elements of xylem in gymnosperms are

1. vessels

2. fibres

3. transfusion tissue

4. tracheids