This chart shows the types of ground tissue and their functions. parenchyma collenchyma sclerenchyma a for food production and storage for strength and support for protection and support b for secretion of substances like nectar for conduction of materials throughout the plant for healing of plant parts c for strength and support for protection and support for food production and storage for healing of plant parts for protection and support for strength and support which row (abc or d) best matches each ground tissue with its function?

For food production and

storage.

For strength and support

For protection and

support. (Ans. A)

Explanation:

Parenchyma: These cells are responsible for the formation of many other tissues and cells. These cells are mostly found in the soft part of the plant. Cell shapes of these cells are isodiametric and cell wall (composed of cellulose) thin in structure. Between these cells intracellular space is present. Main function of these cells are storage of food, in photosynthesis and exchange of the gaseous particles.

Collenchyma: The epidermal cells present on plants are made up of these cells. These cells are found in the petioles, leaves, and stems. Cell are elongated in shape and cell wall (composed of cellulose and pectin) is uneven. Less intracellular space present between the cells. Main function of these cells are providing mechanical support.

Sclerenchyma: Hard and outer parts of the plant made up of these cells. These cells are present in the mature parts of the plant. Cells are elongated, fiber in shape and cell wall (composed of lignin) hard and thick. Intracellular space is not present in these cells so these are tightly packed. Main function of these cells are providing protection and support.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus