CBSE Questions for Class 9 Biology Tissues Quiz 5 - MCQExams.com

• The ends of two long bones are connected by ligaments.
• A ligament is a fibrous connective tissue, that connects bones to other bones. 
• Cartilage is a non-vascular type of supporting connective tissue that is found throughout the body, while tendons connect bones and muscles.

• Areolar tissue is a common type of connective tissue, also referred to as loose connective tissue. 
• It is strong enough to bind different tissue types together, yet soft enough to provide flexibility and cushioning.
• It exhibits interlacing, loosely organised fibres, abundant blood vessels, and significant empty space.
• Its fibres run in random directions and are mostly collagenous, but elastic and reticular fibres are also present. 
• Areolar tissue is highly variable in appearance.
  
  So, the correct answer is option A.

• A cuticle is the waxy layer present on the epidermis of a young stem, it generally prevents water loss by transpiration.
• Phellem (the cork) consists of cells that are dead at maturity and their primary walls become covered from the inside by the secondary wall which consists of parallel suberin lamellae alternating with wax layers.
• The periderm is the secondary protective (dermal) tissue that replaces the epidermis during growth in thickness of stems and roots of gymnosperms and dicotyledons. 
• Suberin is a waterproofing waxy substance found in higher plants.

• The epidermal tissues system forms the outer protective covering of primary plant body in form of epidermis and of secondary plant organs in form of periderm.  During secondary growth, rupturing of epidermal cell and outer cortex by secondary tissues induces formation of new protective layer, periderm which in turn divides to form cork cambium /phellogen. 
• Vascular tissues system consists of stele, which is the central region having vascular bundle, pericycle, pith and medullary rays. 
• The tissues present outside the stele forms extrastelar tissues system. Stele is surrounded by endodermis and cortex, these two together make extra stelar system. 
• Intrastelar tissues system refers to the tissues present in a stele i.e., vascular bundle, pericycle, pith and medullary rays.

• Peyer's patches are located in the ileum of small intestine. They are masses of lymphatic tissue. 
• Their function is to produce lymphocytes which prevent the growth of bacterial populations inside the body. 
• Hence the correct option is B.

• Cotton is a seed hair fibre belonging to  the genus Gossypium and the mallow family (Malvaceae) and native to most subtropical parts of the world. 
• Cotton is a soft, fluffy staple fibre that grows in a boll or protective capsule, around the seeds of cotton plants.
• The fibre is almost pure cellulose. Under natural conditions, the cotton bolls will tend to increase the dispersion of the seeds
• Cotton fibres are collected from epidermal layer of seeds. So, cotton fibres are epidermal hairs of seed and not epidermal hairs of fruits, fibres taken out from roots or fibres taken out from the stem. 

• The haversian canal is a series of tubes around narrow channels formed by lamellae. 
• The haversian canals surround blood vessels and nerve cells throughout the bone and communicate with osteocytes in lacunae through canaliculi. 
• They are present only in bones and not in cartilages. 
• The matrix of bones are vascular and the matrix of cartilage is non-vascular. 

• Multi-unit smooth cells can be found in the in the trachea, the large elastic arteries, the iris of the eye, in the lungs, erectile tissues of hair follicles ( Arrector pili of the dermis) and the vas deferens in the male genital tract.
• The response of the whole muscle depends on upon the number of motor units active, the frequency of discharge in the fibers and the relative amount of excitatory and inhibitory input. 
• Multi-unit smooth muscle activity can be initiated by hormones, but it is not much affected by rapidly stretching the muscle.
• Hence the correct option is D.

Correct Option: D
Explanation:

• Smooth muscles or Visceral muscles are located in the inner walls of hollow visceral organs of the body like the alimentary canal, reproductive tract, etc. 
• Each spindle-shaped smooth muscle fibre contains a single, central nucleus. 
• They do not exhibit any striation and are smooth in appearance. Hence, they are called smooth muscles (non-striated muscles).
• Their activities are not under the voluntary control of the nervous system and are therefore known as involuntary muscles. 

1. Sahli's method
2. Cyanmet Hb method
3. Hemoglobinometer
   
4. Haden Hausser method