Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology structural organization of animals structural organization of leech phylum annelida annelida structural organization of rabbit

The common larva of polychaeta/annelida is

  1. Trochophore

  2. Actinotrocha

  3. Glochidium

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

Trochophore, also called trochosphere, small, translucent, free-swimming larva characteristic of marine annelids and most groups of mollusks. Trochophores are spherical or pear-shaped and are girdled by a ring of cilia (minute hairlike structures), the prototroch, that enables them to swim.  Each segment bears a pair of paddle-like and highly vascularized parapodia, which are used for movement and, in many species, act as the worm's primary respiratory surfaces. Bundles of bristles, called setae, the project from the parapodia.

So the correct answer is 'Trochophore'.

Multiple choice zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

Read the following four statements carefully.
(i) Ventral respiratory group of neurons of medulla oblongata can cause both inspiration and expiration. 
(ii) The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes the respiratory or exchange part of the respiratory system. 
(iii)  During swallowing epiglottis can be covered by a thin elastic cartilaginous flap called glottis to prevent the entry of food into the larynx.
(iv)  Binding of oxygen with haemoglobin is primarily related to partial pressure of $O _{2}$. 
Which of the above two statements are correct? 

  1. (ii) and (iii)

  2. (iii) and (iv)

  3. (i)and(ii)

  4. (i) and (iv)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes the conducting part whereas the alveoli and their ducts form the respiratory or exchange part. During swallowing, glottis can be covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the larynx.

Multiple choice zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

Which of the following options contains the end products formed during anaerobic respiration in yeast?

  1. $H _2O, CO _2$ and energy
  2. $H _2S, C _6H _{12}O _6$ and energy
  3. $CO _2, C _2H _5OH$ and energy
  4. $H _2O$ and $CO _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anaerobic respiration in yeast results in the production of ethyl alcohol, carbon dioxide and energy. $C _6H _{12}O _6 \xrightarrow[Complex]{Zymase} \underset{Ethyl \, alcohol}{2C _2H _5OH} + 2CO _2 + $

Multiple choice zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

Inspiration and expiration contain

  1. Oxygen

  2. Oxygen and carbon dioxide

  3. Carbon dioxide

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • Inhaled air contains more oxygen used to create energy and less carbon dioxide.
  •  Exhaled air contains more carbon dioxide produced as a waste product of energy production and less oxygen as it has been used in respiration. Gas exchange takes place by diffusion in the alveoli within the lungs.
  •  As a result, the composition of inhaled and exhaled air is different.

Therefore, the correct answer is option B.

Multiple choice zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

Useful energy is provided to living beings by the process of 

  1. Digestion

  2. Respiration

  3. Regulation

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

Respiration is the process in which nutrients are converted into useful energy in a cell. It is responsible in transporting oxygen and carbon dioxide between cells and the external environment.

Multiple choice zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

Respiration oxidizes

  1. Glucose

  2. Carbon

  3. Nitrogen

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Respiration is a catabolic process that takes place in living organisms. In this glucose is broken down in presence of oxygen to generate ATP along with the production of water and evolution of carbon dioxide. It is an exergonic process. Thus the correct answer is option A.

Multiple choice zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

In respiration the energy is produced during the process of

  1. Glycolysis

  2. Krebs cycle

  3. Glycolysis and Krebs cycle

  4. Ornithine cycle
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Glycolysis is the first step of respiration which converts the glucose molecules into two molecules of pyruvate along with the production of 8 ATP. The two pyruvate molecules produced by the glycolysis enters the Krebs cycle. Each molecule of pyruvate produces 15 ATP. So total 30 ATP is formed during the Krebs cycle. Total 38 ATP is formed during the aerobic respiration.

So, the correct answer is option C.

Multiple choice zoology respiratory system experiments on photosynthesis cellular respiration introduction to respiration

The common immediate source of energy in cellular activity is

  1. ADP

  2. ATP

  3. FAD

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

ATP is an Adenosine triphosphate (ribose sugar, adenine base, and three phosphate groups), where a high energy bond attaches the third phosphate group to the molecule. The highly unstable bonds break to release the inorganic phosphate to fulfill the energy required for the metabolism.

Hence, the correct answer is option B.

Multiple choice zoology the paths traversed by life evidences for evolution - taxonomy, molecular biology and cytology evidences of evolution evidences of biological evolution

Mark the incorrect statement:-
(A) About $3-4$ mya, man like primates are taller than $4$ feet and walked upright.
(B) Australopithecus, hunted with stone and ate meat.
(C) Pre historic cave arts were developed by Homo sapiens.
(D) Homo erectus probably did not ate meat.

  1. A, B, C

  2. A, B D

  3. A, C, D

  4. A, B, C, D
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement (D) is actually a correct scientific hypothesis (Homo erectus likely ate meat), but the question asks to mark the incorrect statement. Since A, B, and C are historically/scientifically inaccurate in the context of standard biology curricula, option A is the best fit for 'incorrect statements'.