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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 3751. |
Hydra is [CPMT 1993; RPMT 1999, 2000; Pb. PMT 2000] |
| A. | Triploblastic, radial symmetry and acoelomate |
| B. | Triploblastic, radial symmetry and coelomate |
| C. | Diploblastic, radial symmetry and acoelomate |
| D. | Diploblastic, radial symmetry and coelomate |
| Answer» D. Diploblastic, radial symmetry and coelomate | |
| 3752. |
Symmetry in Cnidaria is [CBSE PMT 2005] |
| A. | Radial |
| B. | Bilateral |
| C. | Pentamerous |
| D. | Spherical |
| Answer» B. Bilateral | |
| 3753. |
Sea anemone belongs to phylum [BCECE 2005] |
| A. | Protozoa |
| B. | Porifera |
| C. | Coelenterata |
| D. | Echinodermata |
| Answer» D. Echinodermata | |
| 3754. |
Budding method of asexual reproduction is found in [HP PMT 2005] |
| A. | Amoeba |
| B. | Paramecium |
| C. | Hydra |
| D. | Plasmodium |
| Answer» D. Plasmodium | |
| 3755. |
Which of the following symmetry is found in adult sea-anemone [CPMT 2004; BHU 1992] |
| A. | Radial |
| B. | Biradial |
| C. | Bilateral |
| D. | Spherical |
| Answer» B. Biradial | |
| 3756. |
Which of the following is not found in Hydra [DPMT 2004] |
| A. | Epithelio-muscular cells |
| B. | Cnidocyte |
| C. | Choanocyte |
| D. | Nerve cells |
| Answer» D. Nerve cells | |
| 3757. |
Which of the following does not belong to phylum Coelenterata [MP PMT 2002] |
| A. | Sea pen |
| B. | Sea feather |
| C. | Sea cucumber |
| D. | Sea fan |
| Answer» D. Sea fan | |
| 3758. |
Which is wrongly matched [Orissa JEE 2004] |
| A. | Euglinoidae\[\to \]Myonemes |
| B. | Ciliophora Axonemes |
| C. | Annelida\[\to \]Notopodia |
| D. | Cnidaria\[\to \]Parapodia |
| Answer» E. | |
| 3759. |
Hydra recognises its prey by [BVP 2001; MH CET 2003] |
| A. | Nematocyst |
| B. | Chemical stimulus |
| C. | Smell |
| D. | Sensitivity |
| Answer» B. Chemical stimulus | |
| 3760. |
Ctenophores have similarities with members [RPMT 2002] |
| A. | Porifera |
| B. | Coelenterata |
| C. | Arthropoda |
| D. | Annelida |
| Answer» C. Arthropoda | |
| 3761. |
Bilateral symmetry does not occur in [Pb. PMT 2001] |
| A. | Frog |
| B. | Octopus |
| C. | Mammal |
| D. | Obelia |
| Answer» E. | |
| 3762. |
Hydra will regenerate from a fragment, if it contain [AFMC 2001] |
| A. | Tentacles |
| B. | Epidermis and gastrodermis |
| C. | Tentacles, epidermis and gastrodermis |
| D. | Epidermis, hypodermis and gastrodermis |
| Answer» C. Tentacles, epidermis and gastrodermis | |
| 3763. |
Which is correct about nematocyst in Hydra [AFMC 2001] |
| A. | It is re-used |
| B. | Ejection is conditioned reflex |
| C. | Ejection occurs in response to contact and pierces the prey |
| D. | Prevents coming in contact with other Hydra |
| Answer» D. Prevents coming in contact with other Hydra | |
| 3764. |
Hydra reproduces through [RPMT 2000] |
| A. | Parthenogenesis |
| B. | Encystment |
| C. | Polyembryony |
| D. | Sexually and asexually |
| Answer» E. | |
| 3765. |
In Hydra, cnidoblasts employed during looping are [APMEE 2000] |
| A. | Volvents |
| B. | Stenoteles |
| C. | Atrichous isorhizas |
| D. | Desmonemes |
| Answer» D. Desmonemes | |
| 3766. |
Animal showing thigmotaxis is [CPMT 2000] |
| A. | Ascaris |
| B. | Taenia |
| C. | Fungia |
| D. | Hydra |
| Answer» E. | |
| 3767. |
Hydra is [AMU 2000] |
| A. | Coral |
| B. | Worm |
| C. | Polyp |
| D. | Medusa |
| Answer» D. Medusa | |
| 3768. |
In ectoderm of Hydra, bulk of cells are [AMU 2000] |
| A. | Musculo-epithelial |
| B. | Interstitial |
| C. | Nematoblasts |
| D. | Germ cells |
| Answer» B. Interstitial | |
| 3769. |
Germ cells of Hydra are derived from [BHU 2000] |
| A. | Ectoderm |
| B. | Endoderm |
| C. | Mesoderm |
| D. | Mesogloea |
| Answer» B. Endoderm | |
| 3770. |
Medusa of Obelia is [AIIMS 1999] |
| A. | Carnivorous |
| B. | Herbivorous |
| C. | Detritus feeder |
| D. | Omnivorous |
| Answer» B. Herbivorous | |
| 3771. |
Polymorphism occurs in [BHU 1997] |
| A. | Anthozoa |
| B. | Scyphozoa |
| C. | Rhizopoda |
| D. | Hydrozoa |
| Answer» E. | |
| 3772. |
In Hydra new nematocysts develop from [BHU 1996] |
| A. | Cnidocils |
| B. | Glandular cells |
| C. | Germ cells |
| D. | Interstitial cells |
| Answer» E. | |
| 3773. |
Common name of Fungia is [Bihar MDAT 1996] |
| A. | Mushroom Coral |
| B. | Red Coral |
| C. | Brain Coral |
| D. | Organ Pipe Coral |
| Answer» B. Red Coral | |
| 3774. |
Hydra cut into two pieces will result in [CPMT 1996] |
| A. | Growth without mouth and basal disc |
| B. | Growth of mouth and disc according to their position in the parent |
| C. | Growth of mouth and disc at any end |
| D. | No regeneration is possible |
| Answer» C. Growth of mouth and disc at any end | |
| 3775. |
Hydra is famous for a type of reproduction [CPMT 1996] |
| A. | Budding |
| B. | Gametogenesis |
| C. | Position of sex organs |
| D. | Both (b) and (c) |
| Answer» B. Gametogenesis | |
| 3776. |
Which of the following is a polymorphic coelenterate [CPMT 1998] |
| A. | Physalia |
| B. | Fungia |
| C. | Hydra |
| D. | All of these |
| Answer» B. Fungia | |
| 3777. |
A number of buds have developed on Hydra [APMEE 1996; Pb. PMT 1999] |
| A. | Oldest bud is towards oral region |
| B. | Oldest bud is towards aboral region |
| C. | Both (a) and (b) |
| D. | There is no order |
| Answer» E. | |
| 3778. |
Characteristic feature of coelenterata is [CPMT 1996] |
| A. | All are marine |
| B. | Presence of tentacles around mouth |
| C. | Polyp |
| D. | Gastrovascular cavity |
| Answer» E. | |
| 3779. |
Food of Hydra is [RPMT 1995] |
| A. | Aquatic plants |
| B. | Aquatic animals |
| C. | Algae and aquatic animals |
| D. | Some crustaceans |
| Answer» E. | |
| 3780. |
Testes/gonads are formed in Hydra from [RPMT 1995; Bihar MDAT 2001] |
| A. | Interstitial cells |
| B. | Epithelio-muscular cells |
| C. | Nerve cells |
| D. | All the above |
| Answer» B. Epithelio-muscular cells | |
| 3781. |
If Hydra is broken into pieces [RPMT 1995, 96] |
| A. | Hydra will die |
| B. | Every fragment will grow into complete Hydra |
| C. | Some fragments will form complete |
| D. | Hydra will undergo sexual reproduction |
| Answer» C. Some fragments will form complete | |
| 3782. |
Which pair of cells is present in epidermis of Hydra but not in its endoderm [Bihar MDAT 1995] |
| A. | Stinging cells and interstitial cells |
| B. | Gland cells and germ cells |
| C. | Stinging cells and germ cells |
| D. | Stinging cells and gland cells |
| Answer» D. Stinging cells and gland cells | |
| 3783. |
Portuguese Man of War is [Bihar MDAT 1995; Kerala 2002] |
| A. | Pennatula |
| B. | Coral |
| C. | Physalia |
| D. | Obelia |
| Answer» D. Obelia | |
| 3784. |
Nematocysts are activated by [Bihar MDAT 1994] |
| A. | Water |
| B. | Touch |
| C. | Brain |
| D. | None of the above |
| Answer» C. Brain | |
| 3785. |
Sea fan belongs to [CPMT 2005] |
| A. | Echinodermata |
| B. | Crinoidea |
| C. | Mollusca |
| D. | Coelentrata |
| Answer» C. Mollusca | |
| 3786. |
Which group is commonly called as 'sea stick' |
| A. | Arthropoda |
| B. | Echinodermata |
| C. | Coelenterata |
| D. | Porifera |
| Answer» D. Porifera | |
| 3787. |
Which one of the following animals possesses nerve cells but no nerves [CBSE PMT 1993, 2002] |
| A. | Hydra |
| B. | Tapeworm |
| C. | Earthworm |
| D. | Frog?s tadpole |
| Answer» B. Tapeworm | |
| 3788. |
Nematocysts take part in [MP PMT 1993] |
| A. | Locomotion |
| B. | Offence and defence |
| C. | Food capture |
| D. | All the above |
| Answer» E. | |
| 3789. |
Muscles of Hydra are [CPMT 1992] |
| A. | Smooth |
| B. | Skeletal |
| C. | Both (a) and (b) |
| D. | None of the above |
| Answer» E. | |
| 3790. |
The cells absent in gastrodermis of Hydra are [CPMT 1992] |
| A. | Nutritive cells |
| B. | Stinging cells |
| C. | Gland cells |
| D. | Nerve cells |
| Answer» C. Gland cells | |
| 3791. |
Gonads of Obelia occur [MP PMT 1986] |
| A. | In hydrula stage and indefinite in number |
| B. | Bases of tentacles of medusa and 8 in number |
| C. | On blastostyles and 8 in number |
| D. | On radial canals, oral surface of medusa and four in number |
| Answer» E. | |
| 3792. |
Gastrodermis of Hydra takes part in digestion of [Bihar MDAT 1988] |
| A. | Carbohydrates and fats |
| B. | Proteins and fats |
| C. | Proteins, fats and some carbohydrates |
| D. | Proteins and carbohydrates |
| Answer» D. Proteins and carbohydrates | |
| 3793. |
Body cavity of Hydra is called [CPMT 1989, 91; JIPMER 1998] |
| A. | Enterocoel |
| B. | Coelenteron |
| C. | Gastrovascular cavity |
| D. | Both (b) and (c) |
| Answer» E. | |
| 3794. |
Zoochlorellae and zooxanthallae present in Hydra are [BHU 1985; CPMT 1988; 90, 94; RPMT 1996] |
| A. | Symbionts in nutritive cells |
| B. | Symbionts in the gut |
| C. | Symbionts in cnidoblasts |
| D. | Organisms that provide hypnotoxin |
| Answer» B. Symbionts in the gut | |
| 3795. |
Testes are located in Hydra at [AFMC 1987] |
| A. | Proximal half |
| B. | Distal half |
| C. | Middle |
| D. | Tentacles |
| Answer» C. Middle | |
| 3796. |
Penetrant, volvent and glutinant are types of [CPMT 1988] |
| A. | Nematocysts of Hydra |
| B. | Tentacles of Hydra |
| C. | Zooids of Obelia |
| D. | Tentacles of Obelia |
| Answer» B. Tentacles of Hydra | |
| 3797. |
The gastrovascular cavity of Hydra provides for [CPMT 1984] |
| A. | Digestion and storage |
| B. | Storage and circulation |
| C. | Excretion and storage |
| D. | Digestion and circulation |
| Answer» E. | |
| 3798. |
Which of the following animals has a nervous system but no brain [CBSE PMT 2002; BVP 2002] |
| A. | Pheretima |
| B. | Hydra |
| C. | Amoeba |
| D. | Periplaneta |
| Answer» C. Amoeba | |
| 3799. |
Which of the following has no segmentation [CPMT 1981] |
| A. | Hydra |
| B. | Earthworm |
| C. | Cockroach |
| D. | Centipede |
| Answer» B. Earthworm | |
| 3800. |
In which phylum nerve cells are found but nerves are absent [RPMT 2001] |
| A. | Porifera |
| B. | Coelenterata |
| C. | Platyhelminthes |
| D. | Nemathelminthes |
| Answer» C. Platyhelminthes | |