Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

Ritualized contests with little risk of serious injury or death to animal within the species lead to

  1. A stable dominance hierarchy

  2. Biological altruism

  3. Adaptive radiation

  4. Instinctive behavior

  5. A broader habitat
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ritual contests with little risk to injury help individuals to display their stereotyped aggression which in turn prevent other organisms to attack it. Organization of individuals of a grouped according to their dominance refers to as dominance hierarchy. The agonistic behaviour such as ritual contest with little risk leads to maintenance of stable hierarchy. 

Therefore, the correct answer is option A.

Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

Which is social foresting species?

  1. Leucaena leucocephala

  2. Tectona grandis

  3. Mangifera indica

  4. Rosa indica
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The social foresting species is:

Correct option is A  Leucaena leucocephala.
The common name of the  Leucaena leucocephala is Sebabul. This is the leguminous plant and it is fast growing . This plant is grown for social forestry.

Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

Sacred groves are found in

  1. Meghalaya

  2. Punjab

  3. Jammu and Kashmir

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

A sacred grove is any grove of trees that are of special religious importance to a particular culture. These are also called sacred woods. They are examples of in-situ conservation of biodiversity. Such groves are found throughout the world. In our country, such groves are found in Meghalaya.

So, the correct answer is 'Meghalaya'.

Multiple choice zoology meaning of life level of biological organization in animals introduction to tissues basics of ecology

Oran is a

  1. Sacred grove

  2. Sacred landscape

  3. Sacred animal

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

Oran is a major coastal city located in the north-west of Algeria. It is an important city of Algeria due to its commercial, industrial, and cultural importance. It is a sacred landscape. A legend says that in 900 AD, lions still lived in the area. The last two lions were hunted on a mountain near Oran and are elsewhere referred to as "mountain lions".

So, the correct answer is 'Sacred landscape'.

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Pituitary gland is under the control of

  1. Hypothalamus

  2. Adrenal gland

  3. Pineal gland

  4. Thyroid gland
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

While the pituitary gland is known as the 'master' endocrine gland, both of its lobes are under the control of the hypothalamus; the anterior pituitary receives its signals from the parvocellular neurons and the posterior pituitary receives its signals from magnocellular neurons.

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

The hormones that initiate ejection of milk, stimulates milk production and growth of ovarian follicles are respectively known as 

  1. PRL, OT and LH

  2. PRL, ADH and FSH

  3. LH, PRL and FSH

  4. PRH, OT and LH

  5. PRH, OT and FSH
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Prolactin-releasing hormone (PRH) activates the anterior pituitary to initiate production and ejection of breast milk through the production of prolactin. Oxytocin along with prolactin hormone stimulates milk production. FSH (follicle stimulating hormone) stimulates the growth of ovarian follicles in the ovary before ovulation.

Thus, the correct answer is option E.

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Pheromones are secreted by 

  1. Endocrine gland

  2. Exocrine gland

  3. Apocrine gland

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

In humans, pheromones are secreted onto our skin through the apocrine glands (sometimes called as human scent glands). These are similar to eccrine glands but the apocrine glands secrete a more oily substance. The apocrine glands are normally associated with hairy areas, such as armpits and the crotch area, and are also usually accompanied by eccrine glands, which help to disperse the pheromone secretions. Apocrine glands are activated at puberty, along with hair growth in the axillary (armpit) regions and crotch, which increase the surface area for pheromone dispersal. 

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Prostaglandins affect 

  1. Blood pressure

  2. Defecation

  3. Osmoregulation

  4. Oxygen metabolism
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Most prostaglandins act locally; they are powerful as locally acting vasodilators. Vasodilation occurs when the muscles in the walls of blood vessels relax, so that the vessels dilate. This creates less resistance to blood flow and allows blood flow to increase and hence blood pressure to decrease. 

Multiple choice zoology control and coordination in living organisms hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

Thyrotropin - releasing factor (TRF) is produced by 

  1. Cerebrum

  2. Optic lobe

  3. Cerebellum

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

Thyrotropin-releasing hormone (TRH), also called as thyrotropin-releasing factor (TRF), is a tropic, tripeptidal hormone, produced by the hypothalamus, that stimulates the release of TSH (thyroid-stimulating hormone) and prolactin from the anterior pituitary.

Multiple choice zoology endocrine system and chemical co-ordination hypothalamus nervous and endocrine system in humans coordination in human beings- chemical control

GnRH of hypothalamus stimulates

  1. Ovulation and maintenance of corpus luteum

  2. Secretion of androgen and development of mammary gland

  3. Contraction of uterus during parturition

  4. Ejection of milk
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

GnRH of hypothalamus stimulates the synthesis and secretion of the two gonadotropin hormones, namely luteinizing hormone (LH) and follicle-stimulating hormone (FSH) from the anterior pituitary gland. FSH is responsible for the ovulation. It stimulates the growth of ovarian follicle and growth of eggs in the ovaries. It is also responsible for the pubertal development. Corpus luteum is formed and maintained by the LH. 

Thus, the correct answer is 'Ovulation and maintenance of corpus luteum.'