CBSE Questions for Class 11 Medical Biology The Living World Quiz 14 - MCQExams.com

• Rohan gave the correct answer. In India, about 1,500 varieties of mango are grown including 1,000 commercial varieties. 
• Raj also gave the correct answer. Mango fruit is an excellent source of Vitamin-A and flavonoids like β-carotene, α-carotene, and β-cryptoxanthin.
• Priti gave the incorrect answer. The International Mango Festival is held annually in Delhi during early summer.
• Simran also gave the incorrect answer. Over 500 types of mango are exhibited at the International Mango Festival. 

Ocotillos are desert plants. Most are endemic to Mexico, but also found in USA. This desert plant found in Southwestern United States can survive in the harsh desert climate by staying dormant. When it rains, it grows new leaves and flowers. On seed maturity, it sheds its leaves and becomes dormant again.

1. Artificial classification is based on one or two morphological characters.
2. Cytotaxonomy- It is the use of cytological characters of plants in classification or in solving taxonomical problems.
3. Karyotaxonomy- It is based on the interrelationships of individuals due to chromosomal similarities.
   
4. The natural system of classification- In this type of classification plants are classified on the basis of their complete morphological characteristics.

• The suffix 'aceae' is used for the family while 'ales' suffix is used for the order. Rice and brinjal belong to different families as well as order.
  
• The suffix 'phyta' indicates the sub-kingdom level. Rice and brinjal belong to the same subkingdom i.e. Tracheophyta.
• While 'phyceae' suffix is used to denote classes of algae.
• So, the correct option is 'phyta'.

• Botanical gardens or greenhouses are the place where rare plants can be taken care of outside its natural habitat. Botanical gardens play important role in plant conservation and protection. These are the center for ex situ conservation. 

• Species is defined as the group of organisms that are capable of interbreeding and produce fertile offspring.
• Monkey, Horse, Donkey and Blue-green algae all are examples of different species based on this definition.
• Mule is a product of interspecific hybridisation incapable of interbreeding as it is sterile.
• So, the correct option is '4'.

• A taxonomic rank in classification is the relative level of a group of organisms in a taxonomic hierarchy. The order of classification is a kingdom, phylum, class, order, family, genus, and species. A genus is a taxonomic rank. 
• It is a group of related species. A family is a higher rank to the genus hence, consists of a group of related genera.

• As we move from higher taxonomic rank to lower one, common characters increase.
• Among species, genus, family and families; species is the lowest taxonomic rank. Hence, two individuals of the same species will share maximum number of common characters. 
• So, the correct option is '2 individuals of species'.

• Monograph is a complete global account of a taxon of any rank – family, genus, or species at a given time.
• Manual is useful in providing information for the identification of names of species found in an area.
• Catalogue is the books of libraries rich in botanical titles. 
• Periodicals is a publication appearing usually at regular intervals. 

• Metabolism and consciousness are the most basic features as they are present even in the simplest of the organisms.
• Euglenoids and Chrysophytes are unicellular organisms. In unicellular organisms, reproduction and growth are mutually inclusive as both of them are accomplished through cell division.
• Families and orders do not have very specific characteristics for grouping and simple vegetative as well as floral or reproductive characters are considered for grouping.
• Herbariums have a collection of preserved plant specimens and information about them. They are quick and easy referrals for taxonomical studies.

Study of diversity of organisms and evolutionary relationship amongst them on the  basis of all possible characters is called as systematics.

• Phylum Chordata is divided into three subphylums namely Urochordata, Cephalochordata and Vertebrata.
• Subphylum Vertebrata is divided into two divisions: Agnatha and Gnathostomata.
• Pisces, Amphibia, Reptilia, Aves and Mammalia all are classes under this division.
  

$$\textbf{Correct answer: A}$$ 

$$\textbf{Option (A):}$$ 

$$\bullet$$ The world 'flora' refers to all the planes present in a given geographical area.

$$\bullet$$ It contains all the plants present in the habitat with a detailed account of the scientific description and distribution of the plants.

$$\textbf{Option (B):}$$ 

$$\bullet$$ Manual holds the key to determining specific plants and animals using the taxonomic aid and characterizing them.

$$\textbf{Option (C):}$$ 

$$\bullet$$ A detailed study of an organism or its related taxonomic group is called a monograph.

$$\textbf{Option (D):}$$ 

$$\bullet$$ A booklet containing the list of characters for a specific taxonomic category is known as a catalogue.

Hence, the correct answer is option (A).

• The classical taxonomy is based on few observable morphological characters like the presence or absence of hard shells or the presence of wings etc.
• Modern taxonomic studies are based on the development process and ecological information of organisms along with external and internal structures.