Recent questions tagged class11

Regarding Aves: 1. Their forelimbs are modified into wings for flying. 2. Hind limbs are adapted for walking, swimming, perching or clasping. Regarding 1 and 2 :

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Choose the odd one out regarding Symmetry :

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Choose the odd one out regarding Symmetry :

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Choose the odd one out regarding Coelom :

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Choose the odd one out regarding Coelom :

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Choose the odd one out regarding Coelom :

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Choose the odd one out regarding Segmentation :

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Choose the odd one out regarding Segmentation :

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Choose the odd one out regarding Digestive System :

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Choose the odd one out regarding Digestive System :

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Choose the odd one out regarding Circulatory System :

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Choose the odd one out regarding Circulatory System :

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Choose the odd one out regarding Respiratory System :

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Choose the odd one out regarding Respiratory System :

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Balaenoptera, Camelus, Delphinus, Macropus, Ornithorhynchus, Pteropus - Choose the odd one out with reason

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Choose the odd one out:

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Class – Mammalia : They have two pairs of limbs, adapted for

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The most unique mammalian characteristic is :

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Class – Mammalia : 1. They are found in a variety of habitats – polar ice caps, deserts, mountains, forests, grasslands and dark caves. 2. Some of them have adapted to fly or live in water. Regarding 1 and 2 :

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Regarding Class – Aves : Assertion (A): They are warm-blooded animals. Reason (R): They are able to maintain a constant body temperature. Regarding (A) and (R) :

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The digestive tract of birds has additional chamber/s :

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Class – Aves : 1. Endoskeleton is fully ossified. 2. The long bones are hollow with air cavities (pneumatic). Regarding 1 and 2:

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Class – Aves : 1. Skin is dry without glands. 2. They have oil gland at the base of the tail. Regarding 1 and 2:

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In Class - Aves : The hind limbs generally have

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Class – Aves : 1. They possess beak. 2. The hindlimbs are modified into wings. Regarding 1 and 2:

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Class – Reptilia : 1. Reptiles are homoiotherms. 2. Snakes and lizards shed their scales as skin cast. Regarding 1 and 2:

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Class - Reptilia : 1. Heart is usually three-chambered. 2. Heart is four-chambered in crocodiles. Regarding 1 and 2:

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Class – Reptilia : 1. Limbs may be present or may not be present. 2. Limbs, if present, then present as two pairs. Regarding 1 and 2:

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Class – Reptilia : 1. They have external ear openings. 2. Tympanum represents ear. Regarding 1 and 2:

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Regarding Reptilia : Their body is covered

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Class – Reptilia : 1. They are mostly terrestrial animals 2. Their body is covered by dry and cornified skin, epidermal scales or scutes. Regarding 1 and 2:

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Regarding Reptilia : 1. In this class the mode of locomotion is creeping or crawling. 2. In Latin, repere or reptum, to creep or crawl hence the name. Regarding 1 and 2:

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Regarding Amphibia, heart is :

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Regarding Amphibia, respiration is :

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Regarding Amphibia, which of the following open into cloaca :

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Class – Amphibia : 1. The eyes have eyelids. 2. A tympanum represents the ear. Regarding 1 and 2:

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Regarding Amphibia : 1. They can live in aquatic as well as terrestrial habitats 2. So they are called amphibians Regarding 1 and 2:

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Choose the odd one out:

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Regarding Osteichthyes : Skin is covered with

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Regarding Osteichthyes : 1. They have three pairs of gills 2. Gills are covered by an operculum on each side. Regarding 1 and 2:

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Regarding Osteichthyes : 1. Their body is streamlined. 2. Mouth is mostly terminal. Regarding 1 and 2:

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Osteichthyes includes both

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Choose the odd one out:

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Choose the odd one out:

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Choose the odd one out:

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Choose the odd one out:

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Class – Chondrichthyes : 1. They have external fertilisation 2. Many of them are viviparous. Regarding 1 and 2:

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Class – Chondrichthyes : 1. Sexes are separate. 2. In males pelvic fins bear claspers. Regarding 1 and 2:

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Regarding Classes Chondrichthyes & Osteichthyes of Pisces: Assertion (A): They are called cold-blooded animals. Reason (R): They are aquatic (marine or fresh water) and as they in continous contact with water their blood is cold. Regarding (A) and (R) :

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Class - Chondrichthyes : 1. Some of them have electric organs (e.g., Trygon) 2. Some possess poison sting (e.g., Torpedo). Regarding 1 and 2:

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