Tag: biology

Questions Related to biology

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

  1. Parenchyma

  2. Xylem

  3. Epidermis

  4. Phloem

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Correct Option: A
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'.

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

  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)

Show answer
Correct Option: B
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)'.


Which of the following is a parasitic plant?

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

  1. Cactus

  2. Saliva

  3. Cuscuta

  4. Cucumber

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Correct Option: C
Explanation:

Cuscuta is a parasitic plant. It is lack chlorophyll hence it appears as yellow tubular structures and obtains its food from its host mirabel.

If the contents of a leaf tissue are a carefully fractioned, which of the  fraction could be called alive?

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

  1. Mitochondria

  2. ER

  3. Cell wall

  4. Ribosomes

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Correct Option: B
Explanation:

Mitochondria contains DNA. Thus. it is called semiautonomous organelle and it can survive the fractionation process.

Aichi Target is the outcome of which among the following protocols / summits?

international conservation organizations- cites biodiversity, classification and conservation biology

  1. Kyoto Protocol

  2. Nagoya Protocol

  3. Copenhagen Climate Summit

  4. Bali Communique

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Correct Option: B

Abbreviation for NGO is

international conservation organizations- cites biodiversity, classification and conservation biology

  1. non-governmental office

  2. national-geographical organization

  3. national-governmental organization

  4. non-governmental organization

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Correct Option: D

In 1980s, which African countries were under continuous food crisis?

international conservation organizations- cites biodiversity, classification and conservation biology

  1. Uganda and Cameeron

  2. Tanzania and Somalia

  3. Ethiopia and Tunisia

  4. Malawi, Zambia, Zimbabwe

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Correct Option: D

IUCN (The International Union For Conservation Of Nature And Natural Resources) headquarters is at

international conservation organizations- cites biodiversity, classification and conservation biology

  1. Morges, Switzerland

  2. Paris, France

  3. Vienna, Austria

  4. NewYork, USA

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Correct Option: A

In Asia, Japan is known as a world leader in exploiting

international conservation organizations- cites biodiversity, classification and conservation biology

  1. Tropical Resources

  2. Global Forests

  3. Global Environment

  4. Animal and Plants

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Correct Option: C

In 1992, a team of forty scientist, announced a record high concentration of;

international conservation organizations- cites biodiversity, classification and conservation biology

  1. Chlorine monoxide

  2. Carbon monoxide

  3. Hydrogen monoxide

  4. Carbon dioxide

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Correct Option: A