______________________ carry carbon dioxide-rich blood back to heart from other parts of the body.

In plants ____________ act as a pipeline for translocation of food .

The transpiration that occurs through small pores present on the surface of plant is known as _____________ .

In unicellular animals every part of the organism gets nutrients and oxygen directly through _____________________ .

In plants,the transportation of water and minerals is done by _______________ .

In plants ______________________  helps in the regulation of temperature.

Which of the following are correct ?

(a) The transport system in plants consists of long tubes called xylem and phloem.

(b) The xylem and phloem vessels are present in all the parts of a plant such as roots ,stem, branch and leaves .

Which of the following are correct ?

(a)   In unicellular organisms and in many simple multicellular organisms transportation occur through the processes like osmosis and diffusion.

 (b) In multicellular organism like plants and animals transportation takes place with the help of transport systems.

Which of the following are correct ?

(a) Water and minerals get transported from roots to upper parts of the plant body through xylem. it is a unidirectional flow .

Which of the following are correct ?

(a) Platelet cells are present in our blood and they circulate all around the body through it.

(b) There is bleeding these platelets act as a plug to stop it.

(c) The clot, which forms at the point of wound, is a microscopic network of insoluble fibrous protein.