Explanation

Color blindness is inherited as a recessive trait on the X chromosome.

This is known in genetics as X-linked recessive inheritance.

Males have only one X chromosome and are hemizygous for X-linked traits.

Additional informational:

Colorblindness is an X-linked chromosome (criss-cross inheritance)

The man has XY chromosomes (1 X chromosome)

and female having XX chromosome (2 X chromosome). 

Explanation

Hasty  جلد بازی

Impulsive جذباتی

Explanation

Meissner corpuscles provide sensation about touch, while Pacinian corpuscles provide sensation about pressure.

Meissner corpuscles are found in the dermal papillae of the skin and are sensitive to light touch and vibration.

They are particularly concentrated in areas such as the fingertips, lips, and palms.

Pacinian corpuscles are found deeper in the skin and are sensitive to deep pressure and high-frequency vibration.

They are responsible for detecting mechanical stimuli such as pressure and vibration.

Explanation

Aves denotes the class to which the birds belongs.

Similarly,

homo-sapiens denotes the class to which man belongs.

Explanation

intercalary meristems are found at the bases of young leaves and internodes.

They are mainly responsible for further lengthening of stems and leaves.

Additional informational:

Meristematic cells are also responsible for keeping the plant growing.

The Shoot Apical Meristem (SAM):

• SAM gives rise to organs like the leaves and flowers

The Root Apical Meristem (RAM):

• RAM provides the meristematic cells for future root growth.
  

Explanation

Spirogyra is called pond silk because it is very slimy and hence slippery to the touch.

It is a freshwater green algae

They are found in shallow ponds, ditches, and lakes.

They are free-floating.

Additional informational:

Spirogyra's two-layered cell walls are composed of pectin on the outside and cellulose on the inside.

The body of the spirogyra has a shiny and silky texture due to the mucilage

that is produced when this pectin dissolves in water. Pond silk gets its name from this.

Explanation

Fasciola hepatica, commonly known as the liver fluke

It is a parasitic flatworm that primarily infects the liver of various mammals.

The primary hosts for this parasite are:

Sheep:

• This is one of the most common hosts for Fasciola hepatica.
• The parasite causes significant health problems in sheep, including liver damage and reduced productivity.

Cattle are also common hosts for Fasciola hepatica.

Explanation

The disease caused by congenital deficiency of thyroxine is Cretinism.

Cretinism is a condition that occurs due to inadequate thyroid hormone production or action, particularly during fetal development or infancy.

Thyroxine, also known as T4, is essential for normal growth and development, including:

• brain development
• Congenital hypothyroidism

Cretinism is characterized by severe:

• physical and mental retardation
• stunted growth
• other developmental abnormalities

Explanation

Increased moisture, humidity, and human activity in the soil can lead to the proliferation of herbaceous plants.

The combined effects of these factors create favorable conditions for herbaceous growth

Factor contributes to this stage:

• increased moisture
• humidity
• human influence
  

Explanation

The sporophyte of Riccia is the simplest among bryophytes.

It consists of only a capsule, missing both foot and seta

It does not perform photosynthesis.

Additional informational:

Riccia belongs to the class Liver Worts.

They have dorsoventrally flattened lobed plant bodies with unicellular rhizoids.

The mature sporophyte of Riccia is a globular capsule, embedded within the gametophytic plant and is without foot and seta