Tag: tissues

Questions Related to tissues

Which one is both structural and functional (catalytic) protein?

biology tissues muscle tissue structure of protein muscle tissues

  1. Hexokinase

  2. Myosin

  3. Ribozyme

  4. Acetyl Co-A

Show answer
Correct Option: B
Explanation:

Myosin is found in muscle filaments. The head portion of myosin forms cross linkage with actin filaments during muscular contraction. The cross bridges between actin and myosin are very important for muscular contraction activity. Thus, myosin fulfills both structural and functional roles.

Minerals salts are translocated through (i) along with the (ii) stream of water, which is pulled up through the plant by transpirational pull.
Fill up the blanks in the given statement and select the correct option.

botany tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. (i) - Xylem, (ii) - ascending

  2. (i) - Xylem, (ii) - descending

  3. (i) - Phloem, (ii) - ascending

  4. (i) - Phloem, (ii) - descending

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Correct Option: A

Mineral nutrients absorbed by roots, move to leaves through

botany tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Xylem

  2. Phloem

  3. Sieve tube

  4. Companion cell

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Correct Option: A

Conduction of water and minerals is the main function of?

botany tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Stem

  2. Phloem

  3. Leaf

  4. Xylem

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Correct Option: A
Select the incorrect pair out of the following.

| (A) Type of tissue - | Function | | --- | --- | | (B) Parenchyma -  | Storage, photosynthesis | | (C) Sclerenchyma-  | Mechanical strength | | (D) Xylem -  | Ascent of sap | | (E) Phloem -  | Conduction of water and minerals |
botany tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. E

  2. B

  3. C

  4. D

Show answer
Correct Option: A
Explanation:
Parenchyma is a simple, permanent tissue - function - storage, photosynthesis, buoyancy etc
Sclerenchyma- dead, lignified tissue - function-mechanical support.
Xylem -complex permanent tissue - function conduction of water and mineral, ascent of sap.
Phloem-complex permanent tissue- conduction of food from source to sink
The incorrect pair is - phloem-conduction of water and minerals
So, the correct answer is 'E'

Multi-directional flow of a variety of organic and inorganic solutes occurs through.

botany tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Xylem

  2. Vascular tissue

  3. Phloem

  4. Root

Show answer
Correct Option: C
Explanation:

The multi-directional flow of a variety of organic and inorganic solutes occurs through 'phloem'.

A common structural feature of vessel elements and sieve tube elements is
botany tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Enucleate condition

  2. Thick secondary walls

  3. Pores on lateral walls

  4. Presence of P-protein

Show answer
Correct Option: A
Explanation:

Cells forming the vessels are heavily ligniifed, dead, that is with no protoplasm and nucleus, forming a continuous lacuna by dissolution of the separating walls. 

The cells forming the seive tube are arranged in vertical columns, are not lignified, are living with protoplasm but no nucleus and are connected to each other through partial dissolution of the contact walls forming seive plates.
So, the correct answer is 'Enucleate condition'

Which type of permanent tissue helps in storing food in plants.

botany tissues defense mechanism in plants epidermal tissue system permanent tissues and their types

  1. Parenchyma

  2. Collenchyma

  3. Xylem

  4. Phloem

Show answer
Correct Option: A
Explanation:

Parenchyma is the simple permanent plant tissue and it contains non-specialized cells with thin cell walls. Parenchyma helps in storing food and providing support to the plants. The parenchyma of stem and roots helps to store the water and nutrient.

Collenchyma tissue is made up of elongated cells with irregularly thickened walls. Xylem is the tissue in the vascular plants. Its cells have thick, hard walls. Xylem tissue dies soon after its production. Phloem, are also called bast, tissues in plants that conduct the foods made in the leaves to its all other parts.

So answer A is correct.