Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice gymnosperms pictorial feature of plant kingdom biology

A gymnosperm lacking archegonium is

  1. Pinus

  2. Ephedra

  3. Cycas

  4. Gnetum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gnetum is a genus of gymnosperms that lacks archegonia in its female gametophyte, which is a significant evolutionary departure from most other gymnosperms.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

State whether the following statements are true or false.
One can easily differentiate between a protonema of moss and a multicellular, filamentous green alga as the former does not contain chloroplast in the rhizoids and bears buds which give rise to erect, leafy gametophores.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Answer A: True
Protonema is a thread-like chain of cells that form the earliest stage of the life cycle of mosses and liverworts. It does not contain chloroplast in rhizoids and bear buds.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

The probiotic drinks such as 'Yakult' contains healthy bacterial suspension. They are used for boosting the immune system and strengthening the digestive systems. The mechanisms by which they do it might be by?

  1. By generating antibody against them

  2. By generating toxins which kill other bacteria

  3. They divide in the gut faster and replace the existing harmful bacteria

  4. They eat the harmful bacteria
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Probiotics are live organisms intended to provide health benefits when consumed, generally by improving or restoring the gut flora (microorganisms present in the gut). Yakult is a delicious probiotic fermented milk drink that contains exclusive L.casei strain. Probiotics, when entered into the body generates toxins which help in the elimination of other harmful bacteria.

Thus, the correct answer is 'By generating toxins which kill other bacteria.'

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

Cause of death in snake bite cases usually involve

  1. Neurotoxicity

  2. Destruction RBC's

  3. Permanent contraction of muscles

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Snake bites affects the nervous system at the places where nerves connect to muscles, thereby failure of nerves. It also affects the circulatory system by causing destruction of RBCs or causing blood clotting. 

Therefore, the correct answer is option D.

Multiple choice biology aids to health immunization, treatment and antibiotics antibodies and antitoxin prevention and treatment of disease

The best medicine for snake bite is 

  1. Antiseptic

  2. Antivenom

  3. Antibiotic

  4. Atreptomycin
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Any injury caused by the biting of a snake is called a snake bite. It is usually poisonous. A common sign of snakebite is the presence of two wounds from snake's fangs. Snakebite delivers poison to the person it bites. This poison has to be nullified through anti-venom drugs. Antivenom is a medicine made from antibiotics. It is used to treat snake bites.

So, option B is the correct answer.