Which one of the following pairs of animals comprises "Jawless fishes"

Which one of the following pairs of animals comprises "Jawless fishes"
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Which one of the following pairs of animals comprises "Jawless fishes" A. Guppies and hag fishes B ... . Mackerels and Rohu D. Lampreys and hag fishes
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Which one of the following pairs of animals comprises ‘jawless fishes’? (a) Mackerals and rohu (b) Lampreys and hag fishes (c) Guppies and hag fishes (d) Lampreys and eels

Description : Which one of the following pairs of animals comprises ‘jawless fishes’? (a) Mackerals and rohu (b) Lampreys and hag fishes (c) Guppies and hag fishes (d) Lampreys and eels

Last Answer : (b) Lampreys and hag fishes

Which of the following vertebrates are without teeth? 1. Jawless fishes 2. Turtles and tortoises 3. Toads 4. Birds Codes: (a) 1, 2 (b) 2, 3 (c) 1, 4 (d) 2, 4

Description : Which of the following vertebrates are without teeth? 1. Jawless fishes 2. Turtles and tortoises 3. Toads 4. Birds Codes: (a) 1, 2 (b) 2, 3 (c) 1, 4 (d) 2, 4

Last Answer : Ans:(c)

Which group of vertebrates comprises the highest number of endangered species? (a) Mammals (b) Fishes (c) Reptiles (d) Birds

Description : Which group of vertebrates comprises the highest number of endangered species? (a) Mammals (b) Fishes (c) Reptiles (d) Birds

Last Answer : (a) Mammals

Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal). (b) All bony fishes have four pairs of gills and an operculum on each side. (c) All sponges are marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Description : Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded ( ... marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side

Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal). (b) All bony fishes have four pairs of gills and an operculum on each side. (c) All sponges are marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Description : Which one of the following categories of animals, is correctly described with no single exception in it? (a) All reptiles possess scales, have a three chambered heart and are cold blooded ( ... marine and have collared cells. (d) All mammals are viviparous and possess diaphragm for breathing.

Last Answer : (b) All bony fishes have four pairs of gills and an operculum on each side.

Which one of these animals is jawless - (1) Sphyrna (2) Trygon (3) Myxine (4) Shark

Description : Which one of these animals is jawless - (1) Sphyrna (2) Trygon (3) Myxine (4) Shark

Last Answer : (3) Myxine Explanation: Myxine is a species of jawless fish. It is known as Hag fish in Europe. These are generally classified with the lampreys into the superclass Agnatha (law-less ... and bony fishes) possess true jaws derived from gill arches and are placed in the superclass Gnathostomata.

Which one of these animals is jawless : (1) Sphyrna (2) Trygon (3) Myxine (4) Shark

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Last Answer : Myxine

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Last Answer : (b) Males bear short anal styles not present in females

A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is (a) Neomyxine (b) Petromyzon (c) Eptatretus (d) Myxine.

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Last Answer : (b) Petromyzon

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Ceramic coating material for furnace refractory, which increases itsemissivity and thus the radiation heat transfer rate in the furnace, comprises of (A) Graphite powder (B) Thoria (C) Zircon powder (D) Beryllium

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Last Answer : (D) TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being