Class X

The small pores present of leaf’s surface are called
  1. Stomata
  2. Chlorophyll
  3. Guard cells
  4. None of these
. Which of these juices is secreted by pancreas?
  1. Trypsin
  2. Pepsin
  3. Bile juice
  4. Both I and II
Opening and closing of pores is a function performed by
  1. Stomata
  2. Chlorophyll
  3. Chloroplast
  4. Guard cells
Respiratory pigment in human body is
  1. Chlorophyll
  2. Water
  3. Blood
  4. haemoglobin
. Blood consist of what fluid medium?
  1. Lymph
  2. Platelets
  3. Plasma
  4. All of these
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