Tag: introduction to reproduction

Questions Related to introduction to reproduction

In cockroach, the ootheca is formed by the secretion of 
zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. phallic gland

  2. collaterial gland

  3. mushroom gland

  4. conglobate gland

Show answer
Correct Option: B
Explanation:

Collaterial glands are present in female cockroach as part of reproductive system. These glands are branched tubular glands opening independently on the dorsal side of the genital chamber. The secretion produced by these glands forms the oothecal case of ootheca.

Consider the following four statements (i)- (iv) and select the correct option stating which ones are true (T) and which ones are false (F)
(i) In male cockroach, genital pouch or chamber lies at the hind end of abdomen bounded dorsally by 9th and 10th terga and ventrally by the 9th sternum.
(ii) In cockroach, the haemolymph is composed of colourless plasma and haemocytes
(ii) In female cockroach each ovary is formed of a group of ten ovarian tubules or ovarioles, containing a chain developing ova
(iv) In cockroach the nymph grows by moulting about 13 times to reach the adult form.
zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. (i)- F; (ii)- T; (iii)- F; (iv)- T

  2. (i)- F; (ii)- F; (iii)- T; (iv)- T

  3. (i)- T; (ii)- T; (iii)- F; (iv)- T

  4. (i)- T; (ii)- F; (iii)- T; (iv)- f

Show answer
Correct Option: C
Explanation:

In female cockroach, each ovary is formed of a group of eight ovarian tubules or ovarioles, containing a chain of developing ova.

The development of Periplaneta americana is
zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

  1. holometabolous

  2. paurometabolous

  3. ametabolous

  4. heminetabolous

Show answer
Correct Option: B
Explanation:

The development of Periplaneta americana is paurometabolous, i.e., there is development through nymphal stage.

Which of the following is the "bird flu virus"?

biology animals in daily life introduction to reproduction poultry farming food from animals

  1. H5N1

  2. Haemophilus influenzae

  3. HIV

  4. Rhino virus

Show answer
Correct Option: A

Carefully read the following information to answer the question -


An egg farmer is experimenting with different feed rations with the aim of increasing his production whilst reducing the cost of the feed per egg produced. The data from the two feeding experiments are given below.

Experiment 1

Protein concentration in feed (%) 10 11 12 13 14 15 16
Total vitamin level (mg/kg) 100 100 100 100 100 100 100
Cost of feed ration per 100 hens per day 6.00 7.00 7.50 8.00 8.50 8.75 9.00
Number of eggs per 100 hens per day 70 70 75 80 85 80 80

Experiment 2

Protein concentration in feed (%) 14 14 14 14 14 14 14
Total vitamin level (mg/kg) 50 75 100 125 150 175 200
cost of feed ration per 100 hens per day 8.00 8.25 8.50 8.75 9.00 9.25 9.50
Number of eggs per 100 hens per day 70 80 85 90 95 95 95


Which feed composition gives the least cost per egg produced?

biology animals in daily life introduction to reproduction poultry farming food from animals

  1. Protein concentration (%) - 16; Total vitamin level (mg/kg) - 100

  2. Protein concentration (%) - 14; Total vitamin level (mg/kg) - 50

  3. Protein concentration (%) - 14; Total vitamin level (mg/kg) - 100

  4. Protein concentration (%) - 14; Total vitamin level (mg/kg) - 150

Show answer
Correct Option: D
Explanation:

In Experiment 1-At protein concentration 16% vitamin level 100, the cost of feed is 9.00 and the number of egg produced is 80 per 100 hens

In experiment 2 - At protein concentration 14%, vitamin level 150, the cost of feed is 9.00 and the number of eggs produced is 95, an increase of 15 per 100 hens.
So, the correct answer is 'Protein concentration (%) - 14; Total vitamin level (mg/kg) - 150'

Read the following statements regarding poultry farm management.
(i) Poultry birds include chicken, ducks, turkey and geese.
(ii) Brooder house should be crowd-free, rain proof and protected from predators.
(iii) The most common egg-type variety used for commercial production throughout the world is single comb white leghorn and its various strains.
(iv) Approximately 14 to 16 hours of light including daylight are required for optimum egg production.
Which of the above statements are correct?

biology animals in daily life introduction to reproduction poultry farming food from animals

  1. (iii) and (iv)

  2. (i), (ii) and (iii)

  3. (i), (iii) and (iv)

  4. (i), (ii), (iii) and (iv)

Show answer
Correct Option: D
Explanation:

All the statements given above regarding poultry farm management are correct . Poultry farm includes chickens, ducks, turkey and geese. Brooder house are typically wooden movable structures heated enclosure by electric for raising baby poultry. It is crowd free , rainproof and protected against predators . This will led to higher rate of egg production.  The most common type of egg variety used for commercial production are comes from Leghorn which requires a photoperiod of 16 hours for optimum egg production . Reduction in photoperiod leads to reduce egg yield. 

So, the correct option is 'Option D' .

Carefully read the following information to answer question


An egg farmer is experimenting with different feed rations with the aim of increasing his production whilst reducing the cost of the feed per egg produced. The data from the two feeding experiments are given below.

Experiment 1

Protein concentration in feed (%) 10 11 12 13 14 15 16
Total vitamin level (mg/kg) 100 100 100 100 100 100 100
Cost of feed ration per 100 hens per day 6.00 7.00 7.50 8.00 8.50 8.75 9.00
Number of eggs per 100 hens per day 70 70 75 80 85 80 80

Experiment 2

Protein concentration in feed (%) 14 14 14 14 14 14 14
Total vitamin level (mg/kg) 50 75 100 125 150 175 200
cost of feed ration per 100 hens per day 8.00 8.25 8.50 8.75 9.00 9.25 9.50
Number of eggs per 100 hens per day 70 80 85 90 95 95 95


What are the independent variables in each of the two experiments?

biology animals in daily life introduction to reproduction poultry farming food from animals

  1. Experiment 1 - Maximum daily egg production; Experiment 2 - Maximum daily egg production

  2. Experiment 1 - Protein concentration in the feed; Experiment 2 - Total vitamin level in the feed

  3. Experiment 1 - Total vitamin level in the feed; Experiment 2 - Protein concentration in feed

  4. Experiment 1 - Cost of feed ration per egg produced; Experiment 2 -Cost of feed ration per egg produced

Show answer
Correct Option: B
Explanation:

In experiment 1 the protein concentration is controlled or changed. So as to check the effect on cost of feed ration and number of eggs produced. Therefore it an independent variable

In experiment 2 total vitamin level in the feed is controlled or changed. So as to check the effect on cost of feed ration and number of egg produced. Therefore it is an independent variable.
So, the correct answer is 'Experiment 1 - Protein concentration in the feed; Experiment 2 - Total vitamin level in the feed'

The chances of contracting bird flu from a properly cooked (above $100^0C$) chicken and egg are

biology animals in daily life introduction to reproduction poultry farming food from animals

  1. very high

  2. high

  3. moderate

  4. none.

Show answer
Correct Option: D
Explanation:

Chicken and other poultry products are safe to eat if cooked properly. While cooking poultry to 70 degree celsius , it kills the H5N1 virus which causes bird flu. Therefore, it is recommended to cook meat above 74 degree celsius to kill all food borne pathogens. 

So, the correct option is 'Option D' .

The best layers chicken is

biology animals in daily life introduction to reproduction poultry farming food from animals

  1. Leghorn

  2. Rhode island red

  3. Brahma

  4. Kadaknath

Show answer
Correct Option: A
Explanation:
  • The Leghorn is a breed of chicken originating in Tuscany, in central Italy. 
  • Leghorns are good layers of white eggs, laying an average of 280 per year and sometimes reaching 300–320, with a weight of at least 55 g. 
  • White Leghorns have been much used to create highly productive egg-laying hybrids for commercial and industrial operations.
  •  Hence, The best layers of chicken are Leghorn.
  • So, the correct answer is 'Leghorn'.

Farm eggs are advantageous because?

biology animals in daily life introduction to reproduction poultry farming food from animals

  1. They are laid very fast

  2. Their shelf life is longer

  3. They are more nutritious

  4. They hatch without incubation

Show answer
Correct Option: C
Explanation:

Farm eggs are advantageous because they are more nutritious as the chickens in the farm are fed with food sources of a higher quality.

So, the correct option is ' they are more nutritious'.