334416
Which of the following statements is incorrect w.r.t paurometabolous development of Periplanata ?
1 Nymphs come out of ootheca which were formed in brood pouch of female cockroach
2 Nymphs resemble the adults structurally and functionally in all aspects
3 Nymphs moult about 13 times to reach the adult stage
4 The intermediate development stages are called nymphs
Explanation:
Cockroaches follow a paurometabolous life cycle, it undergoes a gradual metamorphosis where lifecycle includes egg, nymph and adult stages. Nymphs of cockroach differ from its adults structurally as all nymphs are wingless and lack sex organs.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334417
Function of (1) in the given diagram representing alimentary canal of cockroach is
1 Removal of excretory product
2 Grinding the food particles
3 Secretion of gastric juices
4 It stores food
Explanation:
The given diagram shows Alimentary canal of cockroach, where label 1 is representing crop is sac like structure used for storing of food.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334420
Which of the following is correctly stated as happens in the common cockroach?
1 The food is ground by mandibles and gizzard
2 Malpighian tubules are excretory organ projecting out from the colon
3 Oxygen is transported by haemoglobin blood
4 Nitrogenous excretory product is urea
Explanation:
Cockroach contains 2 mandibles which bears teeth. When both the mandibles work simultaneously in a horizontal plane, food is cut and masticated into smaller and fine pieces. Gizzard is a part of alimentary canal which bears six muscular folds which are covered by by chitinous conical plates, the teeth used for grinding the food.
AIPMT - 2011
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334421
Which of the following features is not present in Periplaneta americana ?
1 Indeterminate and radial cleavage during embryonic development
2 Exoskeleton composed of \(\mathrm{N}\)-acetyl glucosamaine
3 Metamerically segmented body
4 Schizocoelom as body cavity
Explanation:
Indeterminate and radial cleavage is a feature of deuterostomes while cockroach is an example of protostomes. Protostomes develop the mouth before the anus, they also have spiral and determinate cleavage. Spiral cleavage refers to the rotational pattern of the dividing cells, and determinate means that each cell has a certain fate - they cannot become whole organisms if isolated from other cells. So, the correct option is 'Indeterminate and radial cleavage during embryonic development'.
334416
Which of the following statements is incorrect w.r.t paurometabolous development of Periplanata ?
1 Nymphs come out of ootheca which were formed in brood pouch of female cockroach
2 Nymphs resemble the adults structurally and functionally in all aspects
3 Nymphs moult about 13 times to reach the adult stage
4 The intermediate development stages are called nymphs
Explanation:
Cockroaches follow a paurometabolous life cycle, it undergoes a gradual metamorphosis where lifecycle includes egg, nymph and adult stages. Nymphs of cockroach differ from its adults structurally as all nymphs are wingless and lack sex organs.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334417
Function of (1) in the given diagram representing alimentary canal of cockroach is
1 Removal of excretory product
2 Grinding the food particles
3 Secretion of gastric juices
4 It stores food
Explanation:
The given diagram shows Alimentary canal of cockroach, where label 1 is representing crop is sac like structure used for storing of food.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334420
Which of the following is correctly stated as happens in the common cockroach?
1 The food is ground by mandibles and gizzard
2 Malpighian tubules are excretory organ projecting out from the colon
3 Oxygen is transported by haemoglobin blood
4 Nitrogenous excretory product is urea
Explanation:
Cockroach contains 2 mandibles which bears teeth. When both the mandibles work simultaneously in a horizontal plane, food is cut and masticated into smaller and fine pieces. Gizzard is a part of alimentary canal which bears six muscular folds which are covered by by chitinous conical plates, the teeth used for grinding the food.
AIPMT - 2011
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334421
Which of the following features is not present in Periplaneta americana ?
1 Indeterminate and radial cleavage during embryonic development
2 Exoskeleton composed of \(\mathrm{N}\)-acetyl glucosamaine
3 Metamerically segmented body
4 Schizocoelom as body cavity
Explanation:
Indeterminate and radial cleavage is a feature of deuterostomes while cockroach is an example of protostomes. Protostomes develop the mouth before the anus, they also have spiral and determinate cleavage. Spiral cleavage refers to the rotational pattern of the dividing cells, and determinate means that each cell has a certain fate - they cannot become whole organisms if isolated from other cells. So, the correct option is 'Indeterminate and radial cleavage during embryonic development'.
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BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334416
Which of the following statements is incorrect w.r.t paurometabolous development of Periplanata ?
1 Nymphs come out of ootheca which were formed in brood pouch of female cockroach
2 Nymphs resemble the adults structurally and functionally in all aspects
3 Nymphs moult about 13 times to reach the adult stage
4 The intermediate development stages are called nymphs
Explanation:
Cockroaches follow a paurometabolous life cycle, it undergoes a gradual metamorphosis where lifecycle includes egg, nymph and adult stages. Nymphs of cockroach differ from its adults structurally as all nymphs are wingless and lack sex organs.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334417
Function of (1) in the given diagram representing alimentary canal of cockroach is
1 Removal of excretory product
2 Grinding the food particles
3 Secretion of gastric juices
4 It stores food
Explanation:
The given diagram shows Alimentary canal of cockroach, where label 1 is representing crop is sac like structure used for storing of food.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334420
Which of the following is correctly stated as happens in the common cockroach?
1 The food is ground by mandibles and gizzard
2 Malpighian tubules are excretory organ projecting out from the colon
3 Oxygen is transported by haemoglobin blood
4 Nitrogenous excretory product is urea
Explanation:
Cockroach contains 2 mandibles which bears teeth. When both the mandibles work simultaneously in a horizontal plane, food is cut and masticated into smaller and fine pieces. Gizzard is a part of alimentary canal which bears six muscular folds which are covered by by chitinous conical plates, the teeth used for grinding the food.
AIPMT - 2011
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334421
Which of the following features is not present in Periplaneta americana ?
1 Indeterminate and radial cleavage during embryonic development
2 Exoskeleton composed of \(\mathrm{N}\)-acetyl glucosamaine
3 Metamerically segmented body
4 Schizocoelom as body cavity
Explanation:
Indeterminate and radial cleavage is a feature of deuterostomes while cockroach is an example of protostomes. Protostomes develop the mouth before the anus, they also have spiral and determinate cleavage. Spiral cleavage refers to the rotational pattern of the dividing cells, and determinate means that each cell has a certain fate - they cannot become whole organisms if isolated from other cells. So, the correct option is 'Indeterminate and radial cleavage during embryonic development'.
334416
Which of the following statements is incorrect w.r.t paurometabolous development of Periplanata ?
1 Nymphs come out of ootheca which were formed in brood pouch of female cockroach
2 Nymphs resemble the adults structurally and functionally in all aspects
3 Nymphs moult about 13 times to reach the adult stage
4 The intermediate development stages are called nymphs
Explanation:
Cockroaches follow a paurometabolous life cycle, it undergoes a gradual metamorphosis where lifecycle includes egg, nymph and adult stages. Nymphs of cockroach differ from its adults structurally as all nymphs are wingless and lack sex organs.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334417
Function of (1) in the given diagram representing alimentary canal of cockroach is
1 Removal of excretory product
2 Grinding the food particles
3 Secretion of gastric juices
4 It stores food
Explanation:
The given diagram shows Alimentary canal of cockroach, where label 1 is representing crop is sac like structure used for storing of food.
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334420
Which of the following is correctly stated as happens in the common cockroach?
1 The food is ground by mandibles and gizzard
2 Malpighian tubules are excretory organ projecting out from the colon
3 Oxygen is transported by haemoglobin blood
4 Nitrogenous excretory product is urea
Explanation:
Cockroach contains 2 mandibles which bears teeth. When both the mandibles work simultaneously in a horizontal plane, food is cut and masticated into smaller and fine pieces. Gizzard is a part of alimentary canal which bears six muscular folds which are covered by by chitinous conical plates, the teeth used for grinding the food.
AIPMT - 2011
BIOXI07: STRUCTURAL ORGANISATION IN ANIMALS
334421
Which of the following features is not present in Periplaneta americana ?
1 Indeterminate and radial cleavage during embryonic development
2 Exoskeleton composed of \(\mathrm{N}\)-acetyl glucosamaine
3 Metamerically segmented body
4 Schizocoelom as body cavity
Explanation:
Indeterminate and radial cleavage is a feature of deuterostomes while cockroach is an example of protostomes. Protostomes develop the mouth before the anus, they also have spiral and determinate cleavage. Spiral cleavage refers to the rotational pattern of the dividing cells, and determinate means that each cell has a certain fate - they cannot become whole organisms if isolated from other cells. So, the correct option is 'Indeterminate and radial cleavage during embryonic development'.
