BIOLOGY
(for 1 mark only)
CHAPTER 1 (Lessons On Life)
1. What is the meaning of the word “bios”?
> “Bios” is a Greek word meaning life.
2. What is the meaning of the word “logos”?
> “Logos” is a Greek word meaning knowledge.
3. What is filament?
> Filament is constituted by vertically connected cells one after another.
4. What are archegoniates?
> Plants with female reproductive organs are called archegoniates.
5. What is Bryophyta?
> Non-vascular plants are called Bryophyta.
What is Pteridophyta?
> Vascular plants are called Pteridophyta.
6. What is Taxa?
> In classifying the organisms, codified units or rans are used in taxonomy
which are called Taxa.
7. What is ‘nested hierarchy’?
> The system of scientific classification of seven main taxonomic ranks
according to International Code is called ‘nested hierarchy’
8. What is Chordata?
> Organisms that possess notochord in any one phase of life are under the
phylum Chordata.
9. What is Primate?
> Organisms with hands with five fingers suitable to grasp and vision more
developed than sense of smell are under the Order, Primate.
,10. What is Mammalia?
> Organisms that feed young on milk and their bodies are covered with hair are
under the Class Mammalia.
11. What is Hominidae?
> Organisms that have similarities with Chimpanzee, gorilla, orangutan etc are
under the Family Hominidae.
12. What is the meaning of Homo?
> Organisms that have brain bigger compared to the body and can walk erectly
on two feet are under the Genus Homo.
13. What is Homo Sapience?
> Organisms that have wide and high forehead, skull is thinner compared to
other species and more intelligent are under the Species Homo Sapience.
14. What is binomial nomenclature?
> The system of scientific naming of an organism is called binomial
nomenclature.
CHAPTER 2 (Cells and Tissues of Organisms)
1. What is Prokaryotic cell?
> The cell which does not have a true nucleus is called a prokaryotic cell. They
are nucleotide.
2. What is Eukaryotic cell?
> The cell which have a well structured nucleus is called an eukaryotic cell.
3. What is Somatic cell?
> The type of cell that rakes part in composition of the body of an organism is
called a somatic cell.
4. What is Gametic cell?
> Gametic cells produce in organisms in which sexual reproduction and
alternation of generations occur.
5. What is cell wall?
> Cell wall is a unique feature of plant cell.
6. What are pits?
> At the time of development of secondary cell wall, cavities are formed called
pits.
7. What is plasmodesmata?
, > Plasmodesmata are formed in the cell wall to exchange materials with
adjacent cells.
8. What is Protoplasm?
> The translucent, semi fluid, viscious substance that constitutes the interior
matter of a living cell is called protoplasm.
9. What is Plasma membrane/ Cell membrane/ plasmalemma?
> The double layered membrane around the protoplasm of a cell is called the
plasma membrane/ cell membrane/ plasmalemma.
10. What is microvilli?
> The foldings of a cell membrane is called microvilli.
11. What is cytoplasm?
> The semi fluid, jelly like substance of a cell that is external to the nuclear
membrane and internal to the cell membrane is called cytoplasm.
12. What is mitochondria?
> Mitochondria is called the power house of cell.
13. What is plastid?
> Plastid produces and store foods and causes the appealing aqnd colorful
appearance of plants.
14. What is Chloroplast?
> Green plastids are called Chloroplasts.
15. What is Chromoplast?
> Chromoplasts causes the colorful appearance of plants.
16. What is Leucoplast?
> Leucolplasts are non-pigmented plastids.
17. What is cristernae/ vesicles?
> Golgi body is composed of stacked of membrane bound structures known as
cristernae and vesicles.
18. What is Cell vacuole?
> The hollow space which can be seen in cytoplasm is called cell vacuole.
19. What is cytoskeleton?
> The cytoskeleton is a complex network of fibers that shapes the cell and holds
the organelles in place?
20. What is centriole?
> A centriole is a hollow cylindrical organelle inside the centrosome.
21. What is a centrosphere?
> A thick liquid surrounding the centriole is called the centrosphere.
(for 1 mark only)
CHAPTER 1 (Lessons On Life)
1. What is the meaning of the word “bios”?
> “Bios” is a Greek word meaning life.
2. What is the meaning of the word “logos”?
> “Logos” is a Greek word meaning knowledge.
3. What is filament?
> Filament is constituted by vertically connected cells one after another.
4. What are archegoniates?
> Plants with female reproductive organs are called archegoniates.
5. What is Bryophyta?
> Non-vascular plants are called Bryophyta.
What is Pteridophyta?
> Vascular plants are called Pteridophyta.
6. What is Taxa?
> In classifying the organisms, codified units or rans are used in taxonomy
which are called Taxa.
7. What is ‘nested hierarchy’?
> The system of scientific classification of seven main taxonomic ranks
according to International Code is called ‘nested hierarchy’
8. What is Chordata?
> Organisms that possess notochord in any one phase of life are under the
phylum Chordata.
9. What is Primate?
> Organisms with hands with five fingers suitable to grasp and vision more
developed than sense of smell are under the Order, Primate.
,10. What is Mammalia?
> Organisms that feed young on milk and their bodies are covered with hair are
under the Class Mammalia.
11. What is Hominidae?
> Organisms that have similarities with Chimpanzee, gorilla, orangutan etc are
under the Family Hominidae.
12. What is the meaning of Homo?
> Organisms that have brain bigger compared to the body and can walk erectly
on two feet are under the Genus Homo.
13. What is Homo Sapience?
> Organisms that have wide and high forehead, skull is thinner compared to
other species and more intelligent are under the Species Homo Sapience.
14. What is binomial nomenclature?
> The system of scientific naming of an organism is called binomial
nomenclature.
CHAPTER 2 (Cells and Tissues of Organisms)
1. What is Prokaryotic cell?
> The cell which does not have a true nucleus is called a prokaryotic cell. They
are nucleotide.
2. What is Eukaryotic cell?
> The cell which have a well structured nucleus is called an eukaryotic cell.
3. What is Somatic cell?
> The type of cell that rakes part in composition of the body of an organism is
called a somatic cell.
4. What is Gametic cell?
> Gametic cells produce in organisms in which sexual reproduction and
alternation of generations occur.
5. What is cell wall?
> Cell wall is a unique feature of plant cell.
6. What are pits?
> At the time of development of secondary cell wall, cavities are formed called
pits.
7. What is plasmodesmata?
, > Plasmodesmata are formed in the cell wall to exchange materials with
adjacent cells.
8. What is Protoplasm?
> The translucent, semi fluid, viscious substance that constitutes the interior
matter of a living cell is called protoplasm.
9. What is Plasma membrane/ Cell membrane/ plasmalemma?
> The double layered membrane around the protoplasm of a cell is called the
plasma membrane/ cell membrane/ plasmalemma.
10. What is microvilli?
> The foldings of a cell membrane is called microvilli.
11. What is cytoplasm?
> The semi fluid, jelly like substance of a cell that is external to the nuclear
membrane and internal to the cell membrane is called cytoplasm.
12. What is mitochondria?
> Mitochondria is called the power house of cell.
13. What is plastid?
> Plastid produces and store foods and causes the appealing aqnd colorful
appearance of plants.
14. What is Chloroplast?
> Green plastids are called Chloroplasts.
15. What is Chromoplast?
> Chromoplasts causes the colorful appearance of plants.
16. What is Leucoplast?
> Leucolplasts are non-pigmented plastids.
17. What is cristernae/ vesicles?
> Golgi body is composed of stacked of membrane bound structures known as
cristernae and vesicles.
18. What is Cell vacuole?
> The hollow space which can be seen in cytoplasm is called cell vacuole.
19. What is cytoskeleton?
> The cytoskeleton is a complex network of fibers that shapes the cell and holds
the organelles in place?
20. What is centriole?
> A centriole is a hollow cylindrical organelle inside the centrosome.
21. What is a centrosphere?
> A thick liquid surrounding the centriole is called the centrosphere.
