Home
Class 12
BIOLOGY
More than ove answer may be correct ...

More than ove answer may be correct
1. Fertile spike-Ophioglossum
2. Sporangiophore-Equisetum
3. Synangium-Psilotum
4. Apophysis-Spirogyra.

A

1, 2, 3 are correct

B

1 and 2 are correct

C

2 and 4 are correct

D

1 and 3 are correct.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the correct pairings of plant structures and their corresponding plant types, we will analyze each option step by step. ### Step-by-Step Solution: 1. **Evaluate Option 1: Fertile Spike - Ophioglossum** - Ophioglossum, commonly known as the tongue fern, has a structure called the fertile spike. This spike is responsible for bearing sporangia, which are the structures that produce spores. - **Conclusion**: This option is correct. 2. **Evaluate Option 2: Sporangiophore - Equisetum** - Equisetum, also known as horsetail, features a reproductive structure called a strobilus or cone, which consists of stacked sporangiophores. These sporangiophores bear sporangia, making them crucial for spore production. - **Conclusion**: This option is also correct. 3. **Evaluate Option 3: Synangium - Psilotum** - Psilotum has a structure known as a synangium, which is a trilocular spore-bearing structure. This means that it is indeed associated with Psilotum. - **Conclusion**: This option is correct as well. 4. **Evaluate Option 4: Apophysis - Spirogyra** - Spirogyra is a green filamentous alga that reproduces sexually through conjugation and vegetatively through fragmentation. It does not possess an apophysis, which is a structure typically associated with certain plants but not with Spirogyra. - **Conclusion**: This option is incorrect. ### Final Answer: The correct options are: 1. Fertile Spike - Ophioglossum 2. Sporangiophore - Equisetum 3. Synangium - Psilotum
Promotional Banner

Topper's Solved these Questions

  • KINGDOM PLANTAE OR METAPHYTA

    DINESH PUBLICATION ENGLISH|Exercise CYG|20 Videos

  • KINGDOM MONERA (THE PROKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|20 Videos

  • KINGDOM PROTISTA (UNICELLULAR EUKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|19 Videos

Similar Questions

Explore conceptually related problems

More than one answer may be correct : Marchantia polymorpha 1. Is dioecious 2. Possesses antheridiophores and archegoniophores 3. Lacks foot and seta in its sporophyte 4. Is heterosporous.

Solve the equation 4x^(2)-5x-3=0 and give your answer correct to two decimal places.

Find the correct answers about body coordination 1. Nervous system 2. Circulatory system 3. Endocrine system 4. Excretory system. (a) 1,2,3 correct (b) 1,2 correct (c) 2,4 correct (d) 1,3 correct

Which of the following plants are heterosporous ? 1 Selaginella, Lycopodium 2 Pteris, Adiantum 3 Psilotum, Equisetum 4 Selaginella, Salvinia

STATEMENT-1: All instrumental errors are random errors. STATEMENT-2:Some of the readings taken using an instrument may be more and some of the readings may be lesser than the actual value of the physical quantity.

Find the correct answers about LH in females 1. Facilitates luteinisation of granulosa cells of ovulated follicle 2. Called ovulation hormone 3. Helps in milk secretion 4. Activates Leydig cells to secrete androgen. (a) 1,2,3 correct (b) 1,2 correct (c) 2,4 correct (d) 1,3 correct

Select correct answers and mark the code Cells regulate their activity through 1. Flow of energy 2. Flow of materials 3. Flow of information 4. Flow of smoke (A) 1, 2, 3 correct (B) 1 and 2 correct (C) 2 and 4 correct (D) 1 and 3 correct

Choose the correct answer from the following : The verices of a triangle (2,-4), (-6,3) and (3,5). The area of triangle is :

Select the correct answer from the following for DNA can be 1. A-DNA " " 2. B-DNA 3. Z-DNA " " 4. Y-DNA.

Assertion (A): I_(2) can displace Cl_(2) form NaClO_(3) . Reason (R ): I is more electronegative than CI. If both (A) and (R) are correct, and (R) is the correct explanation of (A) If both (A) and (R) are correct, but (R) is not the correct explanation of (A). If (A) is correct, but (R) is incorrect. If (A) is incorrect, but (R) is correct.