In general, the hormones that regulate senescence can be divided into two basic categories based on their most commonly observed effects:

I) positive (promoting) senescence regulators and

II) negative (repressing) senescence regulators

a) Hormones involved-Ethylene, Abscisic acid (ABA)

b) Hormones involved-Brassinosteroids (BRs), Salicylic acid (SA), Jasmonic acid (JA)

c) Hormones involved-Cytokinin, Auxin, Gibberellin (GAs)

Select correct combinations from given hormones which are involved in regulators?

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#Question id: 8899

#SCPH06 I Botany

A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics?

TLS Online TPP Program

#Question id: 8899

#SCPH28 | Zoology

A new species of aquatic chordate is discovered that closely resembles an ancient form. It has the following characteristics: external armor of bony plates, no paired lateral fins, and a suspension-feeding mode of nutrition. In addition to these, it will probably have which of the following characteristics?

TLS Online TPP Program

#Question id: 8900

#SCPH06 I Botany

Which of the following statements about craniates is (are) correct?

1. Craniates are more highly cephalized than are non-craniates.

2. Craniatesʹ genomic evolution includes duplication of clusters of genes that code for transcription factors.

3. The craniate clade is synonymous with the vertebrate clade.

4. Pharyngeal slits that can assist in gas exchange originated in craniates,

5. The two-chambered heart originated with the early craniates.

TLS Online TPP Program

#Question id: 8900

#SCPH28 | Zoology

Which of the following statements about craniates is (are) correct?

1. Craniates are more highly cephalized than are non-craniates.

2. Craniatesʹ genomic evolution includes duplication of clusters of genes that code for transcription factors.

3. The craniate clade is synonymous with the vertebrate clade.

4. Pharyngeal slits that can assist in gas exchange originated in craniates,

5. The two-chambered heart originated with the early craniates.

TLS Online TPP Program

#Question id: 8901

#SCPH28 | Zoology

The origin of the craniates occurred at roughly the same time as the

TLS Online TPP Program

#Question id: 8902

#SCPH28 | Zoology

What do craniates have that earlier chordates did not have?