हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Lichens are association of ______.

Advertisements
Advertisements

प्रश्न

Lichens are association of ______.

विकल्प

  • bacteria and fungus

  • alga and bacterium

  • fungus and alga

  • fungus and virus

MCQ
रिक्त स्थान भरें
Advertisements

उत्तर

Lichens are association of fungus and alga.

Explanation:

Lichens are an association of algae and fungi. This symbiotic relationship is mutualistic, where the algal component synthesizes organic food, which is utilized by both partners, while the fungal component offers water, minerals, and protection from desiccation and temperature extremes to the alga.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 13: Organisms and Populations - MULTIPLE CHOICE QUESTIONS [पृष्ठ ९१]

APPEARS IN

एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
अध्याय 13 Organisms and Populations
MULTIPLE CHOICE QUESTIONS | Q 18. | पृष्ठ ९१
नूतन Biology [English] Class 12 ISC
अध्याय 13 Organisms and Populations
Test Your Progress | Q 1. 55. | पृष्ठ ६०८

वीडियो ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्न

Which day is observed as ‘World Environment Day’?


Give the role of VAM related to soil fertility.


Write what do phytophagous insects feed on.


Why do clown fish and sea anemone pair up? What is this relationship called?


Name the two intermediate hosts which the human liver fluke depends on to complete its life cycle so as to facilitate parasitization of its primary host.


Name the type of association:

Clownfish and sea anemone


Name important defense mechanisms in plants against herbivores.


What is population ecology?


Predation and parasitism are which type of interactions?


Tabulate and analysis of two species population interaction.


Differentiate between predator and prey.


Using '-' to depict inhibition and '+' to depict benefit, mutualism between two species can be represented as ____________.


Identify the interspecific interaction in which species A is harmed and species B is unaffected.


In the given picture, identify the type of interspecific interaction.


Match the Columns.

  Column A   Column B
i. Lice on humans a. Endoparasites
ii. Ectoparasites on marine fishes b. Grows on hedge plants
iii. Cuscuta c. Ectoparasites
iv. Plasmodium and humans d. Copepods

Lichens showing relationship between alga and fungus is an example of ____________ type of interaction.


Which one of the following is an example of predation?


Musk deer is an example of ______ 


______ in birds is an interesting example of parasitism in which the parasitic bird lays its eggs in the nest of its host and the host incubates them.


Which of the following is a partial root parasite?


What is commensalism?


Give one example for the following type.

Phytophagous animal


The value of 'Z' (regression coefficient) lies in the range of ______ regardless of the taxonomic group or the region.


Complete the following chart regarding population interaction and re-write:

Sr. No. Name of interaction Interaction between
1. ? Plasmodium and Man
2. ? Leopard and Lion
3. ? Clownfish and Sea-anemone

Select the statement which best describes parasitism.


The diagram given below shows the life cycle of a malarial parasite. Study it carefully and answer the questions that follows:

  1. Name the hosts in which the asexual phase and sexual phase of the life cycle takes place.
  2. Identify the infective stage labelled ‘D’.
  3. Name the structure labelled ‘A’ and ‘E’.
  4. Give any one symptom of malaria.

Statement I: Gause’s ‘Competitive Exclusion Principle states that two closely related species competing for the same resources cannot co-exist indefinitely and competitively inferior one will be eliminated eventually. 

Statement II: In general, carnivores are more adversely affected by competition than herbivores.

In the light of the above statements, choose the correct answer from the options given below:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×