451. The hormone that stimulates heart beat is-

1. Thyroxin
2. Gastrin
3. Glycogen
4. Dopamine

Option “1” is correct
Thyroxine harmone can increase the heartbeat, it’s principal function is to stimulate the consumption of oxygen and thus the metabolism of all cells and tissues in the body.
452. The study of relation of animals and plants to their surroundings is called__________

1. Ecology
2. Ethrology
3. Genealogy
4. Iconology

Option “1” is correct
Ecology is the study of the relationships between plants, animals, people, and their environment, and the balances between these relationships.
453. At which stage in its life cycle does the silkworm yield the fiber of commercial use-

1. Larva
2. Egg
3. Pupa
4. Imago

Option “1” is correct
The silkworm is the larva or caterpillar or imago of the domestic silkmoth, Bombyx mori. It is an economically important insect, being a primary producer of silk.
454. Which one of the following events in a botanical garden is never directly influenced by light?

1. Flowering
2. Photosynthesis
3. Transpiration
4. Fertilization

Option “4” is correct
Fertilization is the fusion of haploid gametes, egg and sperm, to form the diploid zygote. Sunlight has no direct relation with Fertilization.
455. Which of the following is a fish?

1. Jelly fish
2. Lobster
3. Salmon
4. Whale

Option “3” is correct
Salmon is the common name for several species of ray-finned fish in the family Salmonidae.
456. Which is used as an Air pollution indicator?

1. Algae
2. Fungi
3. Bacteria
4. Lichens

Option “4” is correct

Lichens are widely used as environmental indicators or bio-indicators. Because of their sensitivity lichens are particularly significant biological indicators of air pollution.
457. The study of mountains is known as –

1. Oncology
2. Lithology
3. Orology
4. Ornithology

Option “3” is correct

The study or science of mountains and their formation is called Orology.
458. Which of the following plants have root nodules?

1. Leguminous plants
2. Parasitic plants
3. Epiphytic Plants
4. Aquatic Plants

Option “1” is correct
A legume is a plant or its fruit or seed in the family Fabaceae. Legumes are grown agriculturally, primarily for their grain seed called pulse, for livestock forage and silage, and as soil-enhancing green manure. Many legumes have root nodules that provide a home for symbiotic nitrogen-fixing bacteria called rhizobia.
459. Earthworms belongs to the phylum –

1. Protozoa
2. Cnidaria
3. Annelida
4. Mollusca

Option “3” is correct
Earthworms belongs to the Annelida Phylum.
460. Ringworm is a disease caused by –

1. Fungi
2. Bacteria
3. Virus
4. Flies

Option “1” is correct

Ringworm of the skin (tinea corporis) is most commonly caused by the fungus Trichophyton rubrum, which spreads from one person to another
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95

48 thoughts on “Biology”

  48. yvbjmcsdh

    Most of the noise around online casino bonus in Pennsylvania will relate to welcome offers. These are the eye-catching bonuses that are deployed in an attempt to lure new players to play at your online casino. They can take a variety of forms, but are most often deposit match bonuses, free spins, or the chance to recoup your initial losses. Want more details about no deposit casino bonuses? read our article Free Bonuses From Casinos Online – Why Not Try Before You Buy?. To receive the bonus, use our bet365 casino bonus code ‘SBRBONUS’. Please note that bet365 Casino currently only operates in New Jersey, but ranks highly on our list of the best NJ online casino bonuses. The toplist above is best for you who want to try casino for free with a no deposit bonus and care most about that it’s a great casino than getting the best possible bonus. If you want the best possible no deposit bonus, check this list, if you want to deposit between $10 and $100, see this list. If you want to deposit big, see this list.
    https://vekstra.sardaritskillshare.com/aviator-online-bet-explained-strategy-or-spin/
    1Download NoxPlayer on your PC. Collect DoubleU Slots free chips now, get them all swiftly using the freebie links. Collect free DoubleU Slots chips with It can help you in Download Jackpot Party Casino – Slots APK 5035.01 Latest Version for Android Mobile. or tasks related to Games. So in case if you are looking for a solution or any app in Games than in that case Jackpot Party Casino – Slots APK for Android can help you a lot. NoxPlayer is designed for Windows and MAC OS, please visit this website via computer browser to download NoxPlayer. SciPlay experienced significant revenue growth in both Q4 and the entire year of 2022, with a remarkable 18% increase in the fourth quarter and an impressive 11% increase for the entire year. This success was partly due to the outstanding performance of the game Jackpot Party Casino, which achieved its second consecutive quarterly record revenue in Q4 of 2022.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top