NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 107 of 112)
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- Diastema is the empty space between
- incisor and premolar
- incisor and canine
- canine and molar
- premolar and molar
- Mimicry is
- structural adaptation
- animal association adaptation
- protective adaptation
- regulated by environment factors
- When a hybrid tall pea plant (Tt) of F1 generation is crossed with its dominant parent (TT) in a back cross, then the resulting tall progeny of F2 generation is homozygous and heterozygous in the ratio of
- 3: 1
- 1: 1
- 2: 1
- 5: 1
- Peripatus is a connecting link between
- annelids and arthropods
- arthropods and molluscs
- molluscs and echinoderms
- annelids and molluscs
- The first vertebrates to appear on the earth were
- Cyelostoms
- Placoderms
- Ostracoderms
- Chondrichthyes
- At present, the Dipnoans are distributed over
- Europe and North America
- Latin America and Australia
- Europe and Latin America
- North America and Australia
- Both and Zebra and the African lion live in the tropical grasslands but occupy different
- biospheres
- environments
- ecological niches
- habitats
- Which one of the following is not characteristic of largesized animals in nature?
- Higher metabolic rates per unit body weight
- Longer generation time
- Lower reproductive rates
- Slower growth rates
- During migration, birds determine compass directions using
- land markings and water bodies
- water bodies and mountains
- celestial bodies
- mountains and land markings
- The discharge of raw sewage into waterways causes the collapse of aquatic ecosystems, primarily because of
- lack of dissolved oxygen
- lack of nutrients
- increased levels of carbon dioxide
- growth of algae
- The mesonephric duct or Wolffian duct develops as
- Ventro-lateral evagination from the mesonephric vesicle
- Dorsal evagination from the mesonephric vesicle
- Ventral evagination from the mesonephric vesicle
- Dorso-lateral evagination from the mesonephric vesicle
- Anterior neuropore persists throughout the life in
- Chick
- Amphioxus
- Frog and Amphioxus
- Chick, Amphioxus and frog
- The gray crescent of frog՚s embryo represents the future
- Anterior side of the developing embryo
- Posterior side of the developing embryo
- Dorsal side of the developing embryo
- Ventral side of the developing embryo
- Which of the following pairs are correctly matched?
- Match Item 1: Mesencephalon
- Match Item 2: Mid
- Match Item 3: Brain
- Match Item 1: Diencephalon
- Match Item 2: Cerebellum
- Match Item 1: Telencephalon
- Match Item 2: Cerebral hemisphere
- Match Item 1: Myelencephalon
- Match Item 2: Medulla oblongata
- Select the correct answer using the codes given below:
- Codes:
- 2,3 and 4
- 1,3 and 4
- 1,2 and 4
- 1,2 and 3
- In ascidian tadpole larva (tunicate) , the notochord is present
- Throughout the body length
- In the anterior part of the body
- Restricted only to the tail and trunk region
- In parts