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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.
| 3501. |
Sponges are porifers because their bodies have [RPMT 2002] |
| A. | Spicules in skeleton |
| B. | Several pores |
| C. | Canal system |
| D. | All the above |
| Answer» C. Canal system | |
| 3502. |
Spicules of silica occur in [APMEE 2001] |
| A. | Hyalonema |
| B. | Sycon |
| C. | Leucosolenia |
| D. | Grantia |
| Answer» B. Sycon | |
| 3503. |
Skeleton made of spongin fibres occurs in [CPMT 2001; RPMT 2001] |
| A. | Calcarea |
| B. | Demospongiae |
| C. | Hexactinellida |
| D. | Both (a) and (b) |
| Answer» C. Hexactinellida | |
| 3504. |
Type of spongocoel found in Leucosolenia is [CPMT 2001] |
| A. | Ascon |
| B. | Leucon |
| C. | Sycon |
| D. | Rhagon |
| Answer» B. Leucon | |
| 3505. |
Sponges structure corresponding to mouth of other animals is [BHU 1999] |
| A. | Incurrent canal |
| B. | Ostium |
| C. | Osculum |
| D. | Excurrent canal |
| Answer» C. Osculum | |
| 3506. |
Glass Rope sponge is [BVP 2000] |
| A. | Hyalonema |
| B. | Euplectella |
| C. | Scypha |
| D. | Spongilla |
| Answer» B. Euplectella | |
| 3507. |
The middle layer in body wall of porifera is [AIIMS 1999] |
| A. | Mesoderm |
| B. | Mesenchyme |
| C. | Mesogloea |
| D. | Mesentery |
| Answer» C. Mesogloea | |
| 3508. |
Choanocytes in Ascon-type of canal system form lining of [CPMT 1998] |
| A. | Spongocoel |
| B. | Porocyte |
| C. | Apopyle |
| D. | Incurrent canal |
| Answer» B. Porocyte | |
| 3509. |
Incurrent canals are lined by [CPMT 1998] |
| A. | Choanocytes |
| B. | Pinacocytes |
| C. | Porocytes |
| D. | None of the above |
| Answer» C. Porocytes | |
| 3510. |
Osculum occurs in [BHU 1997] |
| A. | Star Fish |
| B. | Ray Fish |
| C. | Hydra |
| D. | Sponge |
| Answer» E. | |
| 3511. |
In sponges, canal system develops due to [CBSE PMT 1996] |
| A. | Gastrovascular system |
| B. | Folding of inner walls |
| C. | Porous walls |
| D. | Reproduction |
| Answer» C. Porous walls | |
| 3512. |
Sponges have evolved from [RPMT 1996] |
| A. | Ciliates |
| B. | Flagellates |
| C. | Protozoans |
| D. | Choanoflagellates |
| Answer» E. | |
| 3513. |
Amphiblastula and parenchymula larval stages are found in the |
| A. | Coelenterata |
| B. | Platyhelminthes |
| C. | Porifera |
| D. | None of these |
| Answer» D. None of these | |
| 3514. |
Characteristics of sponges is [CPMT 1994] |
| A. | Diploblastic |
| B. | Aquatics |
| C. | Link between living and nonliving |
| D. | Body has pores |
| Answer» E. | |
| 3515. |
Totipotent cells of sponges are [CPMT 1993] |
| A. | Thesocytes |
| B. | Archaeocytes |
| C. | Myocytes |
| D. | Chromocytes |
| Answer» C. Myocytes | |
| 3516. |
Nutrition is sponges is [CPMT 1993] |
| A. | Extracellular |
| B. | Intracellular |
| C. | First extracellular and then intracellular |
| D. | First intracellular and then extracellular |
| Answer» C. First extracellular and then intracellular | |
| 3517. |
Carmine particle put above osculum of a sponge would be [CPMT 1993] |
| A. | Left there |
| B. | Ingested and digested |
| C. | Thrown away |
| D. | Ingested and thrown away by ostia |
| Answer» D. Ingested and thrown away by ostia | |
| 3518. |
Collar cells occur in [CPMT 1992, 93] |
| A. | Sponges |
| B. | Hydra |
| C. | Sandworm |
| D. | Star fish |
| Answer» B. Hydra | |
| 3519. |
The simplest type of canal system in Porifera [CBSE PMT 1992] |
| A. | Ascon type |
| B. | Leucon type |
| C. | Sycon type |
| D. | Radial type |
| Answer» B. Leucon type | |
| 3520. |
Bath sponges is generally found in [CPMT 1992] |
| A. | Red Sea |
| B. | Gulf Mexico |
| C. | Pacific Islands |
| D. | Mediterranean sea |
| Answer» E. | |
| 3521. |
Evolution of porifera from protozoans is evidenced by the animals like |
| A. | Euglena |
| B. | Chlamydomonas |
| C. | Volvox |
| D. | Paramecium |
| Answer» D. Paramecium | |
| 3522. |
Nerve cells do not occur in [CPMT 1989] |
| A. | Nematodes |
| B. | Mosquitoes |
| C. | Sponges |
| D. | Coelenterates |
| Answer» D. Coelenterates | |
| 3523. |
Sponges are [Bihar MDAT 1989] |
| A. | Diploblastic |
| B. | Monoblastic |
| C. | Triploblastic |
| D. | Tetrablastic |
| Answer» B. Monoblastic | |
| 3524. |
Venus Flower Basket belongs to Phylum [MP PMT 1987] |
| A. | Porifera |
| B. | Coelenterata |
| C. | Echinodermata |
| D. | Mollusca |
| Answer» B. Coelenterata | |
| 3525. |
Animal which passes water current through its body for food is [DPMT 1986] |
| A. | Star fish |
| B. | Sponge |
| C. | Hydra |
| D. | Earthworm |
| Answer» C. Hydra | |
| 3526. |
Reproductive cells of sponges are formed from [CBSE PMT 1991] |
| A. | Pinacocytes |
| B. | Choanocytes |
| C. | Archaeocytes |
| D. | Trophocytes |
| Answer» D. Trophocytes | |
| 3527. |
Digestion of food occurs in sponges Leucosolenia in [CPMT 1992] |
| A. | Spongocoel |
| B. | Choanocytes followed by amoebocytes |
| C. | Amoebocytes |
| D. | Choanocytes |
| Answer» C. Amoebocytes | |
| 3528. |
Internal asexual propagule of some fresh water sponges is [CPMT 1988] |
| A. | Gemmule |
| B. | Planula |
| C. | Stereoblastula |
| D. | Amphiblastula |
| Answer» B. Planula | |
| 3529. |
The epithelial lining of Sycon is made of [CPMT 1985] |
| A. | Amoebocytes |
| B. | Choanocytes |
| C. | Flat cells/Pinacocytes |
| D. | Both A and B |
| Answer» D. Both A and B | |
| 3530. |
Path of water in a sponge is [CPMT 1984] |
| A. | Dermal ostia \[\to \] Gastral ostia \[\to \]Osculum |
| B. | Dermal ostia\[\to \]Gastral ostia\[\to \]Spongocoel\[\to \]Osculum |
| C. | Osculum \[\to \] Spongocoel \[\to \] Choanocytes \[\to \] Ostia |
| D. | Pinacocytes \[\to \] Choanocytes \[\to \] Enteron \[\to \] Osculum |
| Answer» C. Osculum \[\to \] Spongocoel \[\to \] Choanocytes \[\to \] Ostia | |
| 3531. |
A sponges harmful to oyster industry is [BHU 1984; AFMC 1997] |
| A. | Spongilla |
| B. | Euspongia |
| C. | Hyalonema |
| D. | Cliona |
| Answer» E. | |
| 3532. |
Which of the following is a member of phylum porifera |
| A. | Sycon |
| B. | Leucosolenia |
| C. | Spongilla |
| D. | All of them |
| Answer» E. | |
| 3533. |
Sponges capture food particles with the help up [MH CET 2002] |
| A. | Choanocytes |
| B. | Pinacocytes |
| C. | Thesocytes |
| D. | Trophocytes |
| Answer» B. Pinacocytes | |
| 3534. |
Choanocytes perform [BVP 2001] |
| A. | Nutritions |
| B. | Excretion |
| C. | Reproduction |
| D. | Secretion of spicules |
| Answer» B. Excretion | |
| 3535. |
Which of the following cell type is capable giving rise to other cell type in sponges [Pb. PMT 2004; MH CET 2002] |
| A. | Archaeocytes |
| B. | Collenocytes |
| C. | Thesocytes |
| D. | Pinacocytes |
| Answer» B. Collenocytes | |
| 3536. |
What will happen if a sponge is cut into maximum possible pieces [RPMT 2001] |
| A. | These will die |
| B. | These will differentiate |
| C. | Every piece will form a sponge |
| D. | Some pieces will develop in organs |
| Answer» D. Some pieces will develop in organs | |
| 3537. |
What is left, when bathsponges dries up [AIIMS 2002] |
| A. | Spicules |
| B. | Holdfast |
| C. | Tentacles |
| D. | Spongin fibres |
| Answer» E. | |
| 3538. |
Amphiblastula is the larva of [AFMC 2001; CPMT 2002] |
| A. | Hydra |
| B. | Sycon |
| C. | Planaria |
| D. | Leucosolenia |
| Answer» C. Planaria | |
| 3539. |
The common bath sponge belongs to the genus [MP PMT 2002] |
| A. | Sycon |
| B. | Leucosolenia |
| C. | Euspongia |
| D. | Spongilla |
| Answer» D. Spongilla | |
| 3540. |
Which of the following is boring sponge [CPMT 1999] |
| A. | Cliona |
| B. | Chalina |
| C. | Euplectella |
| D. | Hyalonema |
| Answer» B. Chalina | |
| 3541. |
Which one is not typical to all porifers |
| A. | Perforated body |
| B. | Choanocytes |
| C. | System of pores and canal |
| D. | Presence of spongin fibres |
| Answer» E. | |
| 3542. |
What is found in a sponge [CPMT 1996, 2002; RPMT 1995] |
| A. | Choanocytes |
| B. | Nematocysts |
| C. | Amoebocytes |
| D. | Interstitial cells |
| Answer» B. Nematocysts | |
| 3543. |
Which sponge is found in the river [RPMT 1999] |
| A. | Cliona |
| B. | Spongilla |
| C. | Sycon |
| D. | Hyalonema |
| Answer» C. Sycon | |
| 3544. |
Members of phylum porifera are [CBSE PMT 2000; AFMC 2000; MH CET 2003] |
| A. | Exclusively marine animals |
| B. | Exclusively fresh water animal |
| C. | Mostly fresh water animals but few are marine animals |
| D. | Mostly marine animals but few are fresh water animals |
| Answer» E. | |
| 3545. |
Water currents in Leucosolenia are produced by [AIIMS 1999; CPMT 1991; BHU 1999; DPMT 1999; Haryana PMT 2002] |
| A. | Choanocytes |
| B. | Pinacocytes |
| C. | Archeocytes |
| D. | Thesocytes |
| Answer» B. Pinacocytes | |
| 3546. |
Which sponge is given as a gift in Japan [DPMT 1984; CPMT 1998] |
| A. | Hyalonema |
| B. | Euplectella |
| C. | Tethya |
| D. | Leucosolenia |
| Answer» C. Tethya | |
| 3547. |
Sponges are [BVP 2003] |
| A. | Sessile |
| B. | Planktonic |
| C. | Free-swimming |
| D. | Pelagic |
| Answer» B. Planktonic | |
| 3548. |
Parenchymula is the larva of [CPMT 1990] |
| A. | Hydra |
| B. | Ascaris |
| C. | Pheretima |
| D. | Leucosolenia |
| Answer» E. | |
| 3549. |
In Leucosolenia, digestion takes place in the [CPMT 1990] |
| A. | Paragastric cavity |
| B. | Stomach |
| C. | Osculum |
| D. | Food vacuole |
| Answer» E. | |
| 3550. |
Fresh water sponges are also grouped in the |
| A. | Calcarea |
| B. | Heterocoela |
| C. | Demospongia |
| D. | Trachinellida |
| Answer» D. Trachinellida | |