Tag: organ and organ systems in animals

Questions Related to organ and organ systems in animals

Sympathetic neural system induces ________________.

frog - control and coordination system frog animal diversity - ii (phylum: chordata) organ and organ systems in animals zoology

  1. secretion of digestive juices

  2. heart beat

  3. secretion of saliva

  4. all of these.

Show answer
Correct Option: B
The hind brain in frog consists of
frog - control and coordination system frog animal diversity - ii (phylum: chordata) organ and organ systems in animals zoology

  1. cerebellum

  2. medulla oblongata

  3. diencephalon

  4. Both (a) and (b)

Show answer
Correct Option: D
Explanation:

The hindbrain in frog consists of the 'cerebellum' and 'medulla oblongata'. So, the correct answer is 'Both (a) and (b)'.

Jacobson's organ is?

frog - control and coordination system frog animal diversity - ii (phylum: chordata) organ and organ systems in animals zoology

  1. Absent in Frog

  2. Absent in humans

  3. Present in humans

  4. Vestigial in humans

Show answer
Correct Option: A

Identify the wrong statement about frog.

frog - control and coordination system frog animal diversity - ii (phylum: chordata) organ and organ systems in animals zoology

  1. Parathyroid and pineal body are present

  2. There are ten cranial nerves only

  3. Optic lobes are situated in the mid brain

  4. The ventricle opens into the conus arteriosus

Show answer
Correct Option: A
Explanation:

There are ten pairs of cranial nerves arising from the brain. The brain is enclosed in a bony structure called brain box. The brain is divided into fore-brain mid-brain and hind-brain. Forebrain includes olfactory lobes, paired cerebral hemispheres, and unpaired diencephalon. The midbrain is characterized by a pair of optic lobes. Hind-brain consists of cerebellum and medulla oblongata. The ventricle opens into a sac-like conus arteriosus on the ventral side of heart.

So the correct option is "Parathyroid and pineal body are present".

Following are given four statements (i)- (iv) related to frog. Read the statements carefully and select the option that identifies two correct statements.
(i) The brain is divided into fore-brain, mid-brain and hind-brain
(ii) Vasa efferentia enter the kidneys on their side and open into Bidder's canal.
(iii) Ear acts as a hearing organ only
(iv) RBCs are enucleated and contain red coloured pigment namely haemoglobin.
frog - control and coordination system frog animal diversity - ii (phylum: chordata) organ and organ systems in animals zoology

  1. (ii) and (iii)

  2. (i) and (ii)

  3. (iii) and (iv)

  4. (i) and (iv)

Show answer
Correct Option: B
Explanation:

Ear acts as a hearing as well as balancing organ. RBCs are nucleated and contain red coloured pigment namely haemoglobin.

Read the statement with regard to frog. Which of the statement is/are correct and incorrect?

(i) The medulla oblongata passes out through foramen of Monro and continues into the spinal cord.
(ii) Vasa efferentia are 10-12 in number that arises from testes
(iii) Ovaries have no functional connection with kidneys
(iv) Frogs are uricotelic
frog - control and coordination system frog animal diversity - ii (phylum: chordata) organ and organ systems in animals zoology

  1. Statements (i), (ii) and (iii) are correct while statement (iv) is incorrect

  2. Statements (ii), (ii) are correct while statement (i) and (iv) is incorrect

  3. Statements (ii), (iii) and (iv) are correct while statement (i) is incorrect

  4. None of these

Show answer
Correct Option: B
Explanation:

In frog, the medulla oblongata passes out through foramen magnum and continues into spinal cord. Frogs are ureotelic.