The balance of two gases is very important for all communities, these two gases are

  • nitrogen & oxygen
  • carbon dioxide and oxygen
  • argon & nitrogen
  • none of them

The guard cells flanking stomata control the oxygen and carbon dioxide entering the leaf by opening and closing the

  • veins
  • leaf pores
  • stoma
  • palisade

The process of photosynthesis takes place in the

  • Starch and Sucrose
  • Glucose and oxygen
  • chloroplast
  • system

The color of the pigment in chloroplast is

  • green
  • black
  • yellow
  • red

The waste products of the process of respiration are

  • oxygen + CO2
  • carbon dioxide & water
  • food + oxygen
  • none of them

In photosynthesis, sugar is made by using

  • energy
  • carbon dioxide
  • oxygen
  • sun light

The veins of leaves contain vascular bundles known as

  • closed stoma
  • open stoma
  • phylum
  • xylem

The vascular bundle named xylem, takes water and minerals to the

  • leaves
  • flower
  • roots
  • stem

Greenhouses use the effect of temperature rise, in order to increase the rate of

  • transpiration
  • respiration
  • photosynthesis
  • processing

The chloroplast splits water molecules to release oxygen and add hydrogen to carbon atoms for the formation of

  • Glucose
  • Starch
  • water
  • sugar

The rate of photosynthesis decreases because the enzymes are denatured at

  • lower temperature
  • higher temperature
  • zero temperature
  • none of them

The tissues present in the leaf, under the upper epidermis and above the lower epidermis are known as

  • mesophyll
  • stoma
  • stalk
  • vein
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0