Phloem

What happens if xylem and phloem did not occur in a plant?

Phloem transports

1. Minerals

2. Food prepared by leaves

3. Water

4. All the above

1. Mineral transport in xylem is multi-directional
   
2. Water transport in phloem is uni-directional
   
3. Nutrients move from the healthy parts to the senescing parts of a plant
4. Organic and mineral nutrients undergo bi-directional transport

A conjoint vascular bundle is one in which xylem and phloem are

1. Joined together

2. Separate

3. On same radius

4. On alternate radii

What is translocation?

Name the body part modified for food storage in the following
a. Carrot
b. Colocasia
c. Sweet potato
d. Asparagus
e. Radish
f. Potato
g. Dahlia
h. Turmeric
i. Gladiolus
j. Ginger
k. Portulaca

1. water and mineral salts
2. organic nitrogen and hormones
3. organic and inorganic solutes
4. both a and b

Which among the following includes the components in phloem of angiosperms?

1. Sieve cells, parenchyma and sclerenchyma

2. Sieve tubes, .companion cells, parenchyma and sclerenchyma

3. Sieve tubes, collenchyma and sclerenchyma

4. Sieve cells, vessels, parenchyma and sclerenchyma

Which among the following are the components of phloem in angiosperms?

1. Sieve tubes, companion cells, parenchyma and sclerenchyma

2. Sieve cells, tracheid, parenchyma and sclerenchyma

3. Sieve tubes, collenchyma and sclerenchyma

4. Sieve cells, vessels, parenchyma and sclerenchyma

Loss of water in the form of droplets from the margin of the leaves.

1. Xylem vessels
2. Xylem parenchyma
3. Sieve tubes
4. Tracheids

1. Water transport
2. Passive transport
3. Evaporation of water
4. active transport

Which of the following is not an element of phloem tissue?

1. Tracheids

2. Sieve tubes

3. Phloem fibers

4. Companion cells

Why sieve tubes are called sieve plates?

1. Phloem of both have companion cells
2. Origin of ovule and seed is similar in both
3. Both have leaves, stem and roots
4. Endosperm is formed before fertilization in both

Maximum bordered pits are found in tracheids of

The essential functions of roots are anchorage and absorption of water and minerals in the terrestrial plant.

(a) What functions are associated with the roots of aquatic plants?

(b) How are roots of aquatic plants and terrestrial plants different?

Phloem is formed of long, tubular cells that transport water.

1. True
2. False

Name the type of tissue that:

Transports food from leaves to different parts of the plant

1. Three
2. Two
3. One
4. Four

1. collenchyma
2. xylem
3. simple
4. complex

1. Phellogen, phellem, and phelloderm are collectively known as periderm
2. Phloem is composed of passage cells, sieve tube elements, phloem parenchyma and phloem fibers
3. Xylem is composed of tracheids, vessels, xylem fibres, and xylem parenchyma
4. Tissues such as pericycle, vascular bundles and pith constitute the stele

1. Companion cells
2. Phloem fibres
3. Sieve tubes
4. Phloem parenchyma

38. (a) Which part of cotton plant have fibres?

The green pigment chlorophyll is present in:

1. roots

2. stem

3. flower

4. leaf

Exchange of gases takes place in roots through ___.