Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology transportation in plants and circulation in animals mineral transport types of transport translocation of organic solutes

Identify the correct sequence of movement of water in the root of higher plants.

  1. Epidermic - Cortex -Pericycle-endodermis - phloem

  2. Epidermis -Cortex-endodermis -pericycle -phloem

  3. Epidermis -Cortex -pericycle-endodermis -xylem

  4. Epidermis -Cortex-endodermis-pericycle -xylem
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Water will take the path of least resistance through root to reach the xylem. Water can move across the root via three different pathways. Once in the endodermal cells, the water freely enters the xylem cells where it joins the fast-moving column of water or transpiration stream, headed to the leaves.
So the correct option is 'Epidemic - Cortex -Pericycle-endodermis - phloem'.
Multiple choice biology transportation in plants and circulation in animals mineral transport types of transport translocation of organic solutes

Force responsible for exudation of liquid drops from the margin of the leaves is

  1. Negative hydrostatic

  2. Transpiration pull

  3. Imbibition

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

  • Negative hydrostatic pressure develops at the time of water loss, it occurs when the water is lost through transpiration and creates tension in the cell.
  • Transpiration is the process in which water is lost through the upper or aerial plant parts in the form of water. 
  • Imbibition is the swelling of cells that occurs due to the absorption of water. 
  • Positive pressure is the force in the xylem which exudates drops of liquids through the stoma to the outside and also requires hydathodes which help in the process of guttation (exudation of water droplets mostly from the leaves margins). 
So, the correct option is 'Positive pressure'.

Multiple choice biology animal tissues, morphology and anatomy of cockroach specialized cells in animals tissues and types of tissues levels of organisation in animals

Refers to the items listed under different groups in the given table and select the option which correctly indentifies $X$ and $Y$.

Group I Group II
TapewormHookwormLiver fluke      X VultureHyena   YJackal

  1. X - Pinworm, Y - Crow

  2. X - Mosquito, Y - Bison

  3. X - Leech, Y - Koala

  4. X - Bed bug, Y - Wildbeest
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Group 1 represents various members of the Phylum Platyhelminthes while Group 2 includes members of class Aves of vertebrata.

Pinworm and Crow are included in Phylum Platyhelminthes and Aves respectively.
So, the correct option is 'X - Pinworm, Y - Crow'.

Multiple choice biology animal tissues, morphology and anatomy of cockroach specialized cells in animals tissues and types of tissues levels of organisation in animals

Ubisch bodies are connected with the formation of?

  1. Sporopollenin

  2. Intine and pollenkitt

  3. Exine

  4. Pollenkit and pollinia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
When the anther is young, at the stage of sporogenous tissue, the cells of the tapetum contain numerous spherical bodies called pro-ubisch bodies. The number of pro-ubisch bodies increases by meiosis in Pollen mother cells. These pro-ubisch bodies get coated by sporopollenin and are called ubisch bodies or orbicules. These are involved in the formation of exine of the pollen grains. Thus, the correct answer is option C, Exine.

Multiple choice biology animal tissues, morphology and anatomy of cockroach specialized cells in animals tissues and types of tissues levels of organisation in animals

Unlike animals, plants get energy in the form of

  1. ATP

  2. Soil

  3. Roots

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

Chloroplasts contain a pigment called chlorophyll. Chlorophyll is able to capture the energy from the sun. In doing this, a series of chemical reactions occur that convert the sun's energy into ATP (energy for the plant). 

Therefore, the correct answer is option A.

Multiple choice biology animal tissues, morphology and anatomy of cockroach specialized cells in animals tissues and types of tissues levels of organisation in animals

Population of ferocious Red Ant is kept under check by _______________.

  1. Rufus Wood Pecker

  2. Red-billed Ox Pecker

  3. Yellow-billed Ox-Pecker

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

The Rufus Woodpecker is known to feed on red ants, helping to keep their population in check in certain ecosystems.

Multiple choice biology digestive system of human buccal cavity digestive system - organs coordination in the process of digestion

Elephant tusks are upper incisors, whereas walrus tusks are

  1. Upper incisors

  2. Lower incisors

  3. Upper canines

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

Walrus tusk ivory comes from two modified upper canines. It is also known as 'morse'. Walrus teeth are also commercially carved and traded. The average walrus tooth has a rounded, irregular peg shape and is approximately 5 cm in length.