CBSE Questions for Class 11 Medical Biology Structural Organisation In Animals Quiz 6 - MCQExams.com

The fibrous tissue connecting two bones is called the ligament. Ligaments are very elastic and have considerable strength.

So, the correct answer is 'Ligament'.

The alimentary canal is a tubular structure, extending from the mouth to the anus present in the body cavity of grasshopper and cockroach. It is divided into three regions: foregut, midgut and hindgut.The mouth opens into a short tubular pharynx, leading to a narrow tubular passage called oesophagus. This, in turn, opens into a sac-like structure called crop used for storing food. The crop is followed by gizzard or proventriculus. Gizzard has an outer layer of thick circular muscles and thick inner cuticle forming six highly chitinous plate called teeth. Gizzard helps in grinding the food particles. Hence, the function of gizzard seen in the grasshopper and cockroach digestive system is the grinding of food materials.

So, the correct option is 'grinding of digestive enzymes'. 

• Skeletal muscle cells are multinucleated as individual cells fuse to form larger units with more than one nucleus.
• The skeletal muscles are cylindrical, striated, unbranched, and are under voluntary control.  

• The axon terminals are the end of axon fiber and located close to the dendrites of another neuron, forming a connection known as a synapse and allowing them to send messages from neuron to neuron with the help of neurotransmitter. 
• So, a nerve cell transmits it's impulse to another through its axons. 

• Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands.
• They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

• Connective tissue is a type of tissue distributed throughout the body to form the supporting framework of the body and to bind together and support other tissues. It binds organs to other organs, muscles to bones, and bones to other bones.
• Muscles help in movement.
• Epithelial tissue forms the protective outer covering of the body and internal organs.
• Nerves help in the transmission of impulses to and from the central nervous system.

• Tendons are the tissues which connect muscles to bones.
• Ligaments connect one bone to other at joints and consist of dense regular connective tissues.
• Muscles are the organs that consists different types of tissues and are responsible for bodily movements by their attachment to bones through tendons.
• Cartilage is a flexible skeletal tissue that forms skeleton of embryo and serves to connect short bones together.

Correct Option: D

Explanation:

The location of transmission of electrical nerve impulses between 2 nerve cells (neurons) or between a nerve cell and a muscle cell is called a synapse.

Hence, the structure labelled as A in the diagram of the neurons is called the synapse.