Tag: diversity in plants

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Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

The pertinacious substance involved in saprophytic incompatibility and stored in the exile is derived from ____________.

  1. Tapetum

  2. Microspore

  3. Anther locule

  4. Stigmatic papillae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In flowering plants, the tapetum is the innermost layer of the anther wall that provides nutrients to developing microspores and contributes substances to the pollen wall, including those involved in self-incompatibility.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Which one of the following does NOT apply to saprophytic self-incompatibility systems?

  1. $3$-celled pollen

  2. Dry stigma

  3. Rejection reaction in the style

  4. In vitro pollen germination is difficult
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sporophytic self-incompatibility is typically associated with 2-celled pollen at the time of shedding. 3-celled pollen is characteristic of gametophytic self-incompatibility systems.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Which symbiotic relationship is NOT observed between Rhodium species and plants modulated?

  1. R. Meliloti: Trigonella foenumgracum

  2. R. Leguminosarum: Lens esculenta

  3. R. Japonicum: Glycine max

  4. R. Lupini: Cajanus cajan
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pairing R. Meliloti with Trigonella foenum-graecum is incorrect because R. meliloti typically nodulates Medicago, Melilotus, and Trigonella, but the specific pairing listed here is often cited as a mismatch in specific textbook contexts regarding host specificity.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Match List I with List II and select the correct answer.

List-I(Plant) List-II
a. Cassava $1$. Brassica rapa
b. Clusterbean $2$. Cyamopsis tetragonoloba
c. Radish $3$. Manihot esculena
d. Turnip $4$. Raphanus sativus
  1. A-$1$, B-$2$, C-$4$, D-$3$
  2. A-$3$, B-$2$, C-$4$, D-$1$
  3. A-$1$, B-$4$, C-$2$, D-$3$
  4. A-$3$, B-$4$, C-$2$, D-$1$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Matching the plants to their correct botanical names: Cassava is Manihot esculenta (a3), Clusterbean is Cyamopsis tetragonoloba (b2), Radish is Raphanus sativus (c4), and Turnip is Brassica rapa (d1). This matches option B.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Consider the following statements.
a. In insectivorous plants, trachoma's secrete digestive enzymes onto the trapped insects.
b. Suberin gives the strength and waterproofing properties to sclerenchyma.
c. Roots do not form a bark.
Which of the statements given is/are correct?

  1. $1$ only
  2. $1$ and $2$
  3. $2$ and $3$
  4. $3$ only
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Consider the following statements.
a. Anthoceros has isomorphic alternation of generations and saprophyte is green
b. Riccia has heteromorphy alteration of generations and its saprophyte is non-green.
Which of the statements given is/are correct?

  1. $1$ only
  2. $2$ only
  3. Both $1$ and $2$
  4. Neither $1$ nor $2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

In which of the following groups of organisms, food material is broken down outside the body and absorbed?

  1. Mushroom, Green plants, Amoeba

  2. Yeast, Mushroom, Bread mould

  3. Paramecium, Amoeba, Cuscuta

  4. Cuscuta, Lice, Tapeworm
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The green plant is photoautotrophs that synthesise food material from simple inorganic compounds like water and carbon dioxide in the presence of sunlight. 
Nutrition in Amoeba and Paramecium is holozoic. Thus, solid food particles are ingested which are then acted upon by enzymes and digested. Cuscuta, lice, and tapeworm are parasites with the heterotrophic nutritional mode. Yeast, mushroom and bread mould have a saprophytic mode of nutrition which is chemoheterotrophic in nature. They break down complex organic substances by secreting digestive enzymes outside their body and absorb simple molecules as nutrients. So, the correct answer is option B.  

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Choose the correct answers from the alternatives given.
Which one of the following is an obligate root parasite?

  1. Rafflesia

  2. viscum

  3. Loranthus

  4. Neottia
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Rafflesia is the largest flower that is found on the earth. It is an angiosperm and is an obligate root parasite. An obligate root parasite is the one that cannot complete its life cycle without the presence of a host and derive the nutrition from the host entirely.

So, the correct option is 'Rafflesia'