Biology 501-550 MCQs

Biology

501. Puccinia is a parasitic ________ ?

a. Plant

b. Fungus

c. Animal

d. Algae

502. An illness which largely affects girls usually just after the onset of puberty.

a. Bulimia nervosa

b. Obesity

c. Anorexia nervosa

d. None of these

503. Autotrophic organisms can exist in an exclusively ________ environment?

a. Organic

b. Inorganic

c. Wet

d. Terrestrial

504. Loss of appetite due to the fear of becoming obese is ________ ?

a. Anorexia nervosa

b. Bulimia nervosa

c. Piles

d. Dyspepsia

505. Strong chlorosis is due to the deficiency of _________ in plants?

a. Magnesium

b. Nitrogen

c. Potassium

d. Phosphorus

506. Stunted growth of roots is due to the deficiency of ________ in plants?

a. Potassium

b. Magnesium

c. Phosphorus

d. Iron

507. The liquid that escapes during defrosting frozen meat contains ________ bacteria?

a. Campylobacter

b. Nitrobacter

c. Azobacter

d. Salmonella

508. One of the commonest cause of food poisoning are the toxins produced by ________ ?

a. Azobacter

b. Nitrosomonas

c. Campylobacter

d. Nitrobacter

509. Puccinia commonly destroys _______ ?

a. Corn

b. Tomato

c. Dodder

d. Wheat

510. Nodules on roots of leguminous plants have _________ bacteria?

a. Anaerobic

b. Nitrogen fixing

c. Nitrifying

d. Ammonifying

511. Earthworm is an example of ________ feeder?

a. Detritus

b. Fluid

c. Microphagous

d. Filter

512. All of the insectivorous plants are true ________ ?

a. Heterotrophs

b. Autotrophs

c. Carnivores

d. Saprotrophs

513. Of the following, which one has more variety of nutrition ________ ?

a. Animals

b. Bacteria

c. Plants

d. Fungi

514. Incomplete or imperfect digestion is known as ________ ?

a. Obesity

b. Dyspepsia

c. Anorexia nervous

d. Bulimia nervosa

515. The leaf is bilobed with midrib between them. The plant is ________ ?

a. Saraccnia

b. Dionaea

c. Pitcher plant

d. None of these

516. Anus is surrounded by _______ types of muscles?

a. 2

b. 3

c. 1

d. 4

517. Of the following, which one is missing in herbivores ________ ?

a. Premolars

b. Canines

c. Incisors

d. Molars

518. Certain types of whales are also ________ feeder?

a. Fluid

b. Macrophagous

c. Filter

d. None of these

519. ________ is about 2.4 meter in length and compromising about two fifth of the small intestine?

a. Duodenum

b. Jejunum

c. Ileum

d. Caecum

520. Hydra is an example of _______ feeder?

a. Fluid

b. Macrophagous

c. Filter

d. All of these

521. Hepatic and Pancreatic secretions are also stimulated by a hormone produced by the intestinal mucosa. The hormone is ________ ?

a. Creatin

b. Gastrin

c. Secretin

d. Pepsin

522. Parasites capable of living independently of its host at times is called as _______ parasite?

a. Obligate

b. Strict

c. Facultative

d. Endoparasite

523. A painful burning sensation produced in the chest cavity usually associated with the back flush of acidic chyme into the esophagus is ________ ?

a. Pyrolysis

b. Pyrosis

c. Peristalsis

d. Dyspepsia

524. In planaria, numerous small branches which end blindly are called as _______ ?

a. Digestive tract

b. Intestinal caeca

c. Hepatic caeca

d. Both B & C

525. Midgut in cockroach is a short narrow tube called _______ ?

a. Hepatic caeca

b. Gizzard

c. Stomach

d. Rectum

526. Hunger contractions are ________ contractions?

a. Antiperistalsis

b. Peristalsis

c. Voluntary

d. None of these

527. The partly digested food is stored in ________ in cockroach?

a. Gizzard

b. Crop

c. Hepatic caeca

d. Rectum

528. How many species of fungi are known till now?

a. 10000

b. 100000

c. 10000000

d. 1000

529. Which of the following group represent pathological fungi ________ ?

a. Mushrooms morels and truffles

b. Rusts smuts and molds

c. Penicillium

d. All of these

530. Death cap/death angel (Amanita) and Jack O Lantern mushroom are examples of _______ ?

a. Edible mushrooms

b. Poisonous mushrooms

c. Both of these

d. None of these

531. Which one of the following is different from all the rest regarding the number of cells in its body ________ ?

a. Rusts

b. Mushrooms

c. Molds

d. Yeasts

532. Fungi which get their food directly from dead organic matter are called _______ ?

a. Parasitic fungi

b. Predators

c. Mutualists

d. Decomposers

533. How many species of mushrooms are edible?

a. 100

b. 200

c. 3000

d. 4000

534. Root like structure in saprotrophic fungi are called _______ ?

a. Rhizoids

b. Haustoria

c. Hyphae

d. Constricting rings

535. Penicillium reproduce via ________ ?

a. Spores

b. Conidia

c. Budding

d. Fragmentation

536. Those fungi which can grow only on their living host and cannot be grown on available defined growth culture medium e.g. various mildews and most rust species are called ________ ?

a. Parasitic fungi

b. Obligate parasitic fungi

c. Facultative parasitic fungi

d. All of these

537. Mode of nutrition in penicillium is ________ ?

a. Saprotrophs

b. Parasitic

c. Predators

d. Mutualistic

538. Oyster mushroom is an example of predator fungi which attack on ________ ?

a. Pin warms

b. Tape worms

c. Round worms

d. Platyhelminthes

539. Lichen is a symbiotic mutualistic association of fungi with ________ ?

a. Autotrophs

b. Roots of vascular plants

c. Green algae and cyanobacterium

d. Leguminous plants

540. Foliose lichen are ________ ?

a. Stem like

b. Branching

c. Leaf like

d. Crust like

541. How many species of Ascomycota occur in lichen symbiotic association?

a. 30%

b. 40%

c. 50%

d. 60%

542. An association in which fungal hyphae penetrate the outer cells of the plant root forming coils swelling and minute branches and also extend out into surrounding soil is called ________ ?

a. Mycorrhizal association

b. Endomycorrhizae

c. Ectomycorrhizae

d. Lichen

543. Which one of the following is the largest group of fungi?

a. Zygomycota

b. Ascomycota

c. Basidiomycota

d. Deuteromycota

544. The Kingdom of recyclers is known as kingdom ________ ?

a. Algae

b. Bacteria

c. Fungi

d. Embryophyta

545. According to two kingdom classification fungi were placed in kingdom ________ ?

a. Plantae

b. Animalia

c. Protista

d. Fungi

546. At which stage in the life cycle of Rhizopus meiosis takes place?

a. Formation of sporangiophore via germination of zygospore

b. Formation of spores in sporangia

c. Fusion of two hyphae

d. Formation of Zygote by fusion of gametangia

547. Ecological role of fungi as decomposers is only paralleled by ________ ?

a. Cyanobacteria

b. Blue green algae

c. Bacteria

d. Virus

548. Which of the following is called black bread mold?

a. Pilobolus

b. Penicillium

c. Neurospora

d. Rhizopus

549. Coenocytic hyphae are also known as ________ ?

a. Septate

b. Perforated hyphae

c. Aseptate

d. Uninucleate hyphae

550. In which of the following example of fungi dikaryotic hyphae exist for long period?

a. Deuteromycota

b. Basidiomycota

c. Zygomycota

d. All of these