Assertion (A): Order is a higher taxonomic category characterized by an assemblage of families with many similar characters.
Reason (R): The similar characters in an Order are less in number as compared to different genera included in a Family.
Orders are characterized by relatively few shared characters compared with lower taxonomic ranks.
Question 152 of 214
📘 CLASS XI
Assertion (A): Plant families like Convolvulaceae and Solanaceae are included in the order Polymoniales.
Reason (R): This classification into the order Polymoniales is mainly based on floral characters.
The floral characters of these families justify their placement in the same order.
Question 153 of 214
📘 CLASS XI
Assertion (A): The animal families Felidae and Canidae are included in the order Carnivora.
Reason (R): The order Carnivora encompasses families that share aggregates of specific characteristics.
Families with common aggregate characters are grouped into the order Carnivora.
Question 154 of 214
📘 CLASS XI
Assertion (A): The order Primata and the order Carnivora are placed in different taxonomic Classes.
Reason (R): Order Primata (monkeys, gorillas) and Carnivora (tigers, cats, dogs) are both placed in the class Mammalia.
Both orders belong to the same class, Mammalia.
Question 155 of 214
📘 CLASS XI
Assertion (A): Animals like fishes, amphibians, reptiles, birds and mammals are all included in the phylum Chordata.
Reason (R): They all share common features such as the presence of a notochord and a dorsal hollow neural system.
These defining chordate features justify grouping these animals into Phylum Chordata.
Question 156 of 214
📘 CLASS XI
Assertion (A): In the plant kingdom, classes with a few similar characters are assigned to a higher category called Phylum.
Reason (R): In the case of plants, the equivalent higher category to an animal Phylum is called a Division.
Plants use the taxonomic category Division instead of Phylum.
Question 157 of 214
📘 CLASS XI
Assertion (A): Kingdom Animalia comprises all animals from various phyla and is the highest category in animal classification.
Reason (R): The Kingdom Plantae comprises all plants from various divisions.
Both statements are independently correct but the second does not explain the first.
Question 158 of 214
📘 CLASS XI
Assertion (A): Taxonomists have developed sub-categories within the taxonomic hierarchy.
Reason (R): Sub-categories facilitate a more sound and scientific placement of various taxa.
Sub-categories improve the scientific precision of classification.
Question 159 of 214
📘 CLASS XI
Assertion (A): As we go higher in the taxonomic hierarchy from species to kingdom, the number of common characteristics goes on increasing.
Reason (R): Lower taxa have more characteristics that the members within the taxon share.
Shared characteristics decrease as we move to higher taxonomic ranks.
Question 160 of 214
📘 CLASS XI
Assertion (A): The problem of classification becomes more complex at higher taxonomic categories.
Reason (R): The higher the category, the greater the difficulty of determining the relationship to other taxa at the same level because they share fewer common traits.
Fewer shared characters at higher ranks make classification increasingly difficult.
