Tag: tissues

Quizzes (11) Questions (8)

Questions Related to tissues

Multiple choice biology tissues muscle tissue structure of protein muscle tissues

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

  1. Hexokinase

  2. Myosin

  3. Ribozyme

  4. Acetyl Co-A
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

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.

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

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

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

  4. (i) - Phloem, (ii) - descending
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mineral salts are transported from the roots to the rest of the plant through the xylem tissue. This movement is part of the ascending stream of water driven by transpirational pull.

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

  1. E

  2. B

  3. C

  4. D
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

  1. Enucleate condition

  2. Thick secondary walls

  3. Pores on lateral walls

  4. Presence of P-protein
Reveal answer Fill a bubble to check yourself
A Correct answer
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'

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

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

  1. Parenchyma

  2. Collenchyma

  3. Xylem

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