1. artificially acquired active immunity
2. artificially acquired passive immunity
3. naturally acquired passive immunity
4. specific natural immunity
artificially acquired passive immunity
1. sea food containing lot of cadmium
2. fish contaminated with mercury
3. oysters with lot of pesticide
4. sea food contaminated with selenium
fish contaminated with mercury
1. cell of the filament
2. holdfast
3. zygote
4. zoospores
zygote
1. Red algae
2. Photosynthetic bacteria
3. C4 plants with Kranz anatomy
4. Blue-green algae
Photosynthetic bacteria
1. photochemical smog
2. dry acid deposition
3. industrial smog
4. wet acid deposition
dry acid deposition
1. vessels
2. sperms
3. sieve elements
4. guard cell
sieve elements
1. between the egg cell and synergid
2. by directly penetrating the egg
3. between one synergid and antipodal cell
4. by knocking off the antipodal cells
between the egg cell and synergid
1. 3.5 million
2. 35 thousand
3. 35 million
4. 3.1 billion
3.1 billion
1. are healthier due to good diet
2. catch infections easily
3. may suffer vitamin K deficiency and prolonged bleeding
4. may suffer from beri-beri due to deficiency of vitamin B
may suffer vitamin K deficiency and prolonged bleeding
1. Malleus — anvil
2. SA node — pace maker
3. Leucocytes — lymphocytes
4. Haemophilia — blood cancer
SA node — pace maker