Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

In Cockroach, ootheca is formed by secretion of

  1. Phallic gland

  2. Mushroom gland

  3. Colleterial gland

  4. All the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The colleterial glands open into the vestibulum and secrete most of the protein and tanning agent. The protein may not be directly concerned with ootheca formation, while the latter probably secretes the alkali-resistant outer layer of the ootheca.
The anterior and posterior parts of cockroach secreting the structural protein which produces most of the material used in the formation of the ootheca.

So the correct answer is "Colleterial gland".

Multiple choice zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

Young Cockroach is called

  1. Maggot

  2. Nymph

  3. Ephyra

  4. Pupa
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cockroach eggs hatch because of the combined pressure of the hatchlings within. Upon emerging from the egg case, or ootheca, this immature form of cockroach is known as a nymph or baby cockroach. Nymphs are bright white in color initially. Cockroach nymphs are grayish-brown in color and darken with each progressive molt.  Cockroach nymphs undergo a series of molts. They emerge as full adults from their final molt.

So the correct answer is 'Nymph'.

Multiple choice zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

Male cockroach is identified by the presence of

  1. Green gland

  2. Anal style

  3. Anal cercus

  4. Broad abdomen

  5. Colleterial gland
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The abdomen is made up of 10 segments. The 7th, 8th and 9th sterna form a genital pouch in females. In males, the genital pouch is present at the hind end of the abdomen. The male cockroach has thread-like anal styles, which are missing in the female cockroach. Hence, Male Cockroach is identified by the presence of anal style.

So the correct answer is 'Anal style'.

Multiple choice zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach

Choose the correct answer from the allternatives given.
In which of these organs sperms are nourished and stored in cockroach

  1. Testes

  2. Utricular gland

  3. Ejaculatory duct

  4. Conglobate gland
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In cockroaches, the sperm is stored in the seminal vesicles and are glued together in the form of bundles called spermatophores and discharged during copulation. Seminal vesicles are the part of the ejaculatory duct.

So, the correct option is 'Ejaculatory duct'.

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

  1. phallic gland

  2. collaterial gland

  3. mushroom gland

  4. conglobate gland
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

Multiple choice zoology study of animal type - cockroach introduction to reproduction reproduction in cockroach reproductive system of cockroach
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.

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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

Multiple choice zoology concept of life theories of the origin of life origin of life the origin of cells and cell division

Transformation of the early reducing atmosphere of the earth into an oxidizing atmosphere was mainly due to the activities of

  1. Aerobic photosynthesizers

  2. Anaerobic heterotrophs

  3. Anaerobic photosynthesizers

  4. Anaerobic chemoheterotrophs
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cyanobacteria are thought to be the first aerobic photosynthesizers evolved which gradually increased the oxygen portion of atmosphere changing it into oxidising one. The aerobic respiration was thus helpful for the animals to survive.

Thus, the correct answer is option A. 

Multiple choice zoology allotropy of oxygen ozone - a case study stratospheric pollution ozone and its depletion

In antarctica, ozone depletion is due to the formation of which of the following compounds?

  1. Acrolein

  2. PAN

  3. PCBs

  4. Chlorine nitrate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ozone layer depletion is caused due to CFC's. So, chlorine nitrate, which is found in the stratosphere causes break down of the ozone layer. Chlorine is highly reactive and it interacts with ozone and hence destroys the ozone layer.