Tag: levels of organisation in plants

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Questions Related to levels of organisation in plants

Multiple choice biology plant tissues tissues of plants levels of organisation in plants structural organization in living organisms

The stalk of a leaf is derived from which one of the following types of plant tissue?

  1. Sclerenchyma

  2. Paranchyma

  3. Chlorenchyma

  4. Collenchyma
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Collenchyma is a structural tissue that provides flexible support to growing plant organs like petioles and young stems. It is characterized by unevenly thickened cell walls that allow for both strength and growth.

Multiple choice biology plant tissues tissues of plants levels of organisation in plants structural organization in living organisms

Which of the following tissue provides mechanical support to the growing parts of the plants such as young stem and petiole of a leaf ?

  1. Parechyma

  2. Sclerenchyma

  3. Collenchyma

  4. Chlorenchyma
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Collenchyma is a living plant tissue characterized by unevenly thickened cell walls, providing mechanical strength and flexibility to growing plant organs such as young stems and petioles.

Multiple choice biology plant tissues tissues of plants levels of organisation in plants structural organization in living organisms
Identify the simple tissue from the following.

  1. Parenchyma

  2. Xylem

  3. Epidermis

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

Simple permanent tissue: Made up of only one type of cells. Parenchyma, collenchyma, sclerenchyma.

Complex permanent tissues: Made up of many kinds of cells.Xylem and pholem.
Parenchyma: It is most simple and unspecialized tissue which is concerned mainly with the ordinary vegetative activities of the plant.
So, the correct answer is 'Parenchyma'.

Multiple choice biology plant tissues tissues of plants levels of organisation in plants structural organization in living organisms

Match the following and choose the correct option from below

A. Meristem (i) Photosynthesis, storage
B. Parenchyma (ii) Mechanical support
C. Collenchyma (iii) Actively dividing cells
D. Sclerenchyma (iv) Stomata
E. Epidermal tissue (v) Sclereids

  1. A-(i), B-(iii), C-(v), D-(ii), E-(iv)

  2. A-(iii), B-(i), C-(ii), D-(v), E-(iv)

  3. A-(ii), B-(iv), C-(v), D-(i), E-(iii)

  4. A-(v), B-(iv), C-(iii), D-(ii), E-(i)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A. Meristem: It includes group or cluster of cells which remain in a continuous state of division or retain their power of division.

B. Parenchyma: It performs the function of storage of reserve food materials, storage of water in succulents, Buoyancy and gaseous exchange in water plants.
C. Collenchyma: It is the chief supporting tissue in young dicotyledonous stems. The tissue has the capacity to expand and gives tensile strength to the body.
D. Sclerenchyma: It consists of thick-walled dead cells. It is of two main types: Fibres and Sclereids. Sclereids are short and possess extremely thick lamellated lignified walls with long tubular simple pits.
E. Epidermal tissue:  The tissue originates from the outermost layer of the apical meristem. It has epidermis, cuticle and wax, Stomata, Trichomes. Singular of stomata is stoma. A typical stoma is microscopic and usually consists of two kidney-shaped guard cells surrounding a pore.
So, the correct answer is 'A-(iii), B-(i), C-(ii), D-(v), E-(iv)'.


Multiple choice biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

Pectic material are stained with

  1. Cotton blue

  2. Acetocarmine

  3. Iodine

  4. Methylene blue
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pectic substances are a group of polysaccharides in plant cell walls and some mucilages, which are endowed with multifunctional properties, such as the control of cell wall integrity and porosity. Methylene blue is used to indicate whether the cells are dead or alive.

 So, the correct answer is 'Methylene blue.'

Multiple choice biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

The plant cells central vacuole

  1. Provides the plant cell with support

  2. Stores nutrients and cellular waste products

  3. Is a reservoir for water

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
In plant cells, there is a centrally located large vacuole. This vacuole serves as the reservoir of water and sometimes wastes. It also provides the plant cell with structural support and also reserves nutrients.

So, the correct answer is 'all of the above'.
Multiple choice biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

Plant cells need a protective cell wall around their cells because

  1. they are far more important than the animal cells

  2. they cannot move and protect themselves from the extreme weather conditions

  3. they are prokaryotic cells

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Eukaryotic cells, in addition to the nucleus, have many membrane-bound organelles like the mitochondria, endoplasmic reticulum, Golgi bodies etc. Such membrane-bound organelles are absent in the Prokaryotic cells

Multiple choice biology structural organization in living organisms structure of a plant cell levels of organisation in plants plant and animal cell

Casparian Strips are found on the

  1. Walls of pericycle cells

  2. Walls of endodermal cells

  3. Walls of epidermal cells

  4. Walls of bundle sheath cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Endodermis is the innermost layer of the cortex. It is made up of barrel-shaped cells which do not enclose intercellular spaces. The young endodermal cells possess a ligno suberised  thickenings called casparian strip s or casparina bands which runs along their radial and tangential walls.
So the correct option is 'Walls of endodermal cells'.